There will be no option to buy but Trabzonspor will cover all of Onana's wages for the duration of the deal and pay a loan fee, with a series of realistic add-ons also included in the arrangement.
Onana made 29 appearances for Trabzonspor while on loan during the 2025-26 campaign, helping them win the Turkish Cup for the first time since 2020.
While he was scheduled to return to United's pre-season in July, the 30-year-old - who United signed for £47.2m from Inter Milan in 2023 - knew there was no chance of ousting Senne Lammens as head coach Michael Carrick's first choice.
With Lemmens with the Belgium squad at the World Cup, the future of United's number two goalkeeper Altay Bayindir also uncertain and promising youngster Radek Vitek hoping to get a move before pre-season training starts, Carrick could have some inexperienced goalkeepers, plus veteran Tom Heaton, in his squad for the opening friendly against Wrexham in Helsinki on 17 July.
Depending on how Casemiro is viewed – and Cristiano Ronaldo for that matter - 11 (or to be strictly accurate nine) United players are still going, including Bruno Fernandes and Diogo Dalot, who were bystanders as Portugal came from behind, and survived a dramatic VAR check in the 13th minute of injury time, to beat Croatia and book a last-16 meeting with Spain.
Fernandes is one of six United players who has had a meaningful impact across the tournament.
Up to last night, he had featured in every minute for Portugal. However, a single assist explained why Roberto Martinez took Fernandes off against Croatia, with his side trailing and heading out of the competition. Fernandes did nearly give Portugal the lead much earlier in the contest and it is difficult to imagine he will not start against Spain.
United team-mate Diogo Dalot was an unused substitute. The defender has featured for just 45 minutes so far - the second half of the goalless draw with Colombia.
Media caption,
Four of United's contingent have not played a minute yet. Altay Bayindir and Tyler Fletcher won't as Turkey and Scotland are out. It would need an injury or suspension for Senne Lammens to get on in place of Belgium's Thibaut Courtois, while many are questioning how Kobbie Mainoo has not been called upon given England's lack of creativity against deep defences.
Matheus Cunha is arguably the United player who has had the biggest impact so far. He has scored three goals for Brazil and been integral to the improved form of Carlo Ancelotti's side after establishing himself as the first-choice striker.
Casemiro is only just not a United player, so there is reflected glory in his vital equaliser against Japan, while Ederson is not quite a United player, so there was interest in his nine-minute cameo against Haiti.
Lisandro Martinez seems set for a long run in the tournament as one of Argentina's starting central defenders. Noussair Mazraoui is in the same position for Morocco, who play Canada in the first last-16 game on Saturday.
Marcus Rashford has featured in all four England games but arguably his biggest impact was his goalscoring cameo off the bench in the opener against Croatia.
Amad Diallo impressed with two goals in four games for Ivory Coast – as many goals as he managed all season for United. Sadly, Manuel Ugarte's tournament ended as he was carried off on a stretcher during Uruguay's elimination by Spain with a ligament injury that looks likely to rule him out for the season.
As for Ronaldo, he is of course not a Manchester United player – but his bond to the club is so strong, no supporter is ambivalent about what happens to him.
Other than Fletcher, it is unlikely any United player will feature in the club's first two pre-season friendlies - against Wrexham in Helsinki on 18 July, the day before the World Cup final, and Rosenborg on 24 July.
If he gets his three weeks off, those already out are likely to return for the game against Atletico Madrid in Stockholm on 1 August.
It is envisaged all United's senior players will be on the week-long training camp in the Republic of Ireland that follows the 8 August encounter with Paris St-Germain.
Gossip: Man Utd prepare Baleba bidpublished at 07:35 BST 3 July
07:35 BST 3 July
After missing out on Mateus Fernandes, Manchester United are ready to make a bid for Brighton's 22-year-old Cameroon midfielder Carlos Baleba. (Give Me Sport), external
Your World Cup scouting: Youngsters and goalkeeperspublished at 17:39 BST 2 July
17:39 BST 2 July
Image source, Getty Images
We've been asking you which players you have watched at the World Cup that you think would be a great fit at Manchester United.
Here are some of your comments:
Nathan: Mexico's Gilberto Mora - so impressive down the wing. Just 17 years old but such a skilled hard-worker who also tracks back and doesn't give up. Tackles players twice his size and wins the ball. Great skills.
Jack: Ayyoub Bouaddi. He is a proper centre-midfielder who can carry the ball and also recover it. I'd pay the £70m for him before someone else does. Felix Nmecha from Germany is also a player I would sign.
Rob: Well, Paraguay goalkeeper Orlando Gill might be worth a punt after his display against Germany. I'm sure someone in Europe will make him an offer. Given that he still plays in Paraguay, I'm sure he would be very interested in an opportunity to play in the Premier League.
Bob: After seeing Japan play at this World Cup, I can see why in previous seasons United have kept tabs on Zion Suzuki in goal. Would be an ideal choice as a number two to Senne Lammens.
Rashford's future remains unresolvedpublished at 14:59 BST 2 July
14:59 BST 2 July
Simon Stone Manchester United reporter
Image source, Getty Images
Despite no signings so far this summer, Marcus Rashford is a Manchester United players again.
His contract - the biggest at the club - also runs until 2028.
Barcelona opted not to trigger a £26m transfer for the 28-year-old, currently on World Cup duty with England, last month.
United's current stance is that they will not entertain another loan to Barca. Unless he finds a new club in the meantime, he will also return for pre-season training three weeks after his World Cup commitments are over.
Club officials are portraying a sense of calm, stating, quite rightly, it is seven weeks before the first Premier League game at Hull City and almost nine before the transfer window closes.
'We are going to sign players' – is the assurance. How they play, not whether they are a big name or not, will be the judgement on which their status is measured, it is being stressed.
Whether that is enough to appease many of the club's supporters – buoyed by last season's unexpected Champions League qualification and desperate for new arrivals – is another matter.
What is going on with Man Utd's lack of summer signings?published at 08:37 BST 2 July
08:37 BST 2 July
Simon Stone Manchester United reporter
Image source, Getty Images
For the second time in a week, Manchester United have missed out on a midfield target.
On 25 June, Manchester City agreed a club record £116m deal with Nottingham Forest for United's first-choice Elliot Anderson.
Now Tottenham have agreed to pay West Ham £85m for Mateus Fernandes.
United were keen on both. The issue is how much it would have cost to bring them to Old Trafford.
But, as June flips into July, out of contract players such as Casemiro and Jadon Sancho have now left. Others, most significantly Marcus Rashford and Andre Onana, are Manchester United players again.
So far, no-one has come in and, beyond Rasmus Hojlund, whose £38m exit was confirmed in May following Napoli's qualification for next season's Champions League, and those out of contract, no-one has left.
United have agreed a £35m deal with Serie A outfit Atalanta for Ederson but his late call-up to the Brazil squad means his medical will not happen until Carlo Ancelotti's side – who play Norway in the last 16 on 5 July – are out of the competition.
But they want at least one, and possibly two, more midfield options.
They have most recently been linked with Bournemouth's Alex Scott, although Arsenal have already been told the 22-year-old is not for sale and his current club are keen to tie him down to a long-term contract.
A second Bournemouth midfielder in Tyler Adams and Brighton's Carlos Baleba have also been mentioned.
Another name being floated is Felix Nmecha, a former academy player at Manchester City.
Nmecha is well known to United's director of football Jason Wilcox, who was formerly head of City's academy.
The position of Real Madrid's France international Aurelien Tchouameni continues to be monitored but the feeling at this stage is that he will remain at the Santiago Bernabeu.
There are likely to be other names being considered as well.
United sources are adamant their recruitment strategy is the right one and point to the relative success of last summer to prove it.
John: Manchester United have made it obvious they want to put profits before trophies. We will finish up with no midfield next season.
Isaac: I feel like he is the one player who had room to flourish but the figure was always going to be a determinant. Sad to see him go, especially to Spurs. We should not be losing out to teams with no Champions League to offer.
Luis: I'm very disappointed with us not chasing the Fernandes deal - look at how good Declan Rice has been for Arsenal. We need at least three midfielders, especially with the extra 10-15 games we will play and the injury to Manuel Ugarte. It just seems all the club is focused on is cutting costs and wanting to build a new stadium when we need to focus on the squad now. I can understand they don't want to splurge on players as we have done in the past, but if this club wants to succeed we need to start taking more risks.
Simon: This is just a repeat situation of the same old problems. If we're not careful, we will waste all the good work that Michael Carrick has put in.
Mark: Personally, I don't think we're missing out at all at the reported £85m. Years gone by United have been ridiculed at throwing big money on transfer fees so, in my honest opinion, it's correct not to pay that asking price.
Nigel: I feel the management are right to only want players to join if they are committed to United. We have lost a lot of money overpaying for players who weren't fully committed and whose performances showed it.
Nigel: If Fernandes decides to go to Spurs then it's his loss. He'll regret it.
Ian: Draw a line under it and move on, no way is he an £85m player. Move for Aurelien Tchouameni or Sandro Tonali.
'It's insulting Mainoo's not playing'published at 14:35 BST 1 July
14:35 BST 1 July
Image source, Getty Images
Manchester United midfielder Kobbie Mainoo has yet to feature for England at the 2026 World Cup with Declan Rice and Elliot Anderson emerging as Thomas Tuchel's preferred starters in central midfield.
When Rice was injured for the final group game against Panama, Tuchel made a tactical change to start Morgan Rogers and then Jordan Henderson was preferred to come on from the bench.
Gaz said: "The biggest insult of all, for me Jordan Henderson coming on ahead of Kobbie Mainoo is ridiculous."
Jay added: "I'll go even further, I think the biggest insult of all is that Kobbie Mainoo's not starting for England.
"I don't think you need Rice and Anderson in the group stages and I know Rice was injured but that should have been the opportunity then for Mainoo to start and he still wouldn't start him. You've moved Bellingham deeper and started Rogers.
"You don't need two players that are similar. They're very good. I'm not saying Rice and Anderson aren't good players, but do you really need Rice and Anderson against Ghana or against Croatia even? I don't think you do.
"I think Mainoo and one of Rice and Anderson, it's probably going to be Rice isn't it because of his experience and the fact that he's an England stalwart, works perfectly. We saw it in the Euros.
"It worked perfectly and got us to the final and for some reason Tuchel prefers having these two sort of similar players and even then when one of them is injured, he shuffles it and even going further than that when you're rotating players around with substitutions, he still won't bring Mainoo on.
"The thing that baffles me about this is Mainoo is a better player than Jordan Henderson. I think he's got more talent. I think he's fitter. That's probably the least controversial opinion I've ever had. I don't even think Jordan Henderson would disagree with that one to be honest with you."
Homegrown Heroes: Marcus Rashfordpublished at 11:42 BST 1 July
11:42 BST 1 July
Image source, Getty Images
Marcus Rashford's rise from being raised by a single mother in Fallowfield, Withington and Wythenshawe to a Manchester United hero and key figure in England's World Cup 2026 squad is detailed in the latest episode of Homegrown Heroes on BBC Radio Manchester.
Rashford's former youth coach and past managers speak to his ability, as BBC Radio Manchester's Gaz Drinkwater talks you through his journey over the last decade in becoming a Manchester icon.
Man Utd hold firm on valuation as Spurs near Fernandes transferpublished at 08:56 BST 1 July
08:56 BST 1 July
Sami Mokbel and Simon Stone BBC Sport
Image source, Getty Images
Tottenham have agreed an £85m deal to sign Portugal midfielder Mateus Fernandes from West Ham.
The north London club saw off competition from Manchester United, who were unwilling to match the fee agreed by Spurs - which is a guaranteed £85m without add-ons.
The 21-year-old was viewed as a primary target for Tottenham after their £80m bid to sign Sandro Tonali was rejected by Newcastle.
Fernandes was understood to have an open mind about where he goes, with his agent Jorge Mendes speaking to both Tottenham and Manchester United.
Manchester United are sticking to their position of only being willing to buy players at what they consider to be right valuation.
They did like Fernandes but felt their stance paid off last season when they believe patience was rewarded with the right players coming in at right price.
United were not convinced Fernandes really wanted to play for the club.
The priority at Old Trafford is strengthening the central midfield area and they have already agreed a £35m deal with Atalanta for Ederson, but his arrival has been delayed by a late call-up to the Brazil World Cup squad.
United's players are due to return for pre-season training on 9 July and so far, other than out-of-contract duo Casemiro and Tyrell Malacia, Michael Carrick's squad remains as it was at the end of last season, with no significant departures or arrivals.
The plan to sell Manuel Ugarte will now have to be shelved after his serious injury on World Cup duty with Uruguay. Meanwhile, Netherlands striker Joshua Zirkzee is still at the club, and sources have dismissed rumours around the exit of midfielder Mason Mount.
Gossip: Man Utd pursue midfielderspublished at 08:19 BST 1 July
08:19 BST 1 July
Manchester City, Manchester United and Bayern Munich have joined Arsenal by expressing interest in Morocco midfielder Ayyoub Bouaddi, but Lille want at least £70m for the 18-year-old and to keep him on loan next season. (Mail), external
Meanwhile, Liverpool, Arsenal, United and Borussia Dortmund are interested in 25-year-old Mainz midfielder Kaishu Sano, who scored for Japan in their World Cup last-32 defeat by Brazil. (Bulinews, via Nikkan Sports), external
Fernandes future should become clearer with formal bid closepublished at 11:38 BST 30 June
11:38 BST 30 June
Simon Stone Manchester United reporter
Image source, Getty Images
Mateus Fernandes' future should become clearer over the next few days as Manchester United and Tottenham and battle it out to sign the West Ham midfielder.
Fernandes was not intended to be part of the first lot of Hammers players that returns for pre-season training next Monday.
However, it is anticipated a formal bid is close to being made which is likely to bring the situation to a head.
Fernandes is understood to have an open mind about where he goes, with his agent Jorge Mendes speaking to both Premier League clubs.
It is not thought there is an immediate need for West Ham to sell the player to comply with financial regulations, although manager Nuno Espirito Santo knows there will have to be departures following relegation to the Championship.
Manchester United have been keen admirers of the 21-year-old and remain in talks with West Ham. However, it has appeared Spurs were more likely to reach the Hammers' asking price, thought to be about £80m.
The priority at Old Trafford is strengthening the central midfield area and they have already agreed a £35m deal with Atalanta for Ederson, but his arrival has been delayed by a late call-up to the Brazil World Cup squad.
United's players are due to return for pre-season training on 9 July and so far, other than out-of-contract duo Casemiro and Tyrell Malacia, Michael Carrick's squad remains as it was at the end of last season, with no significant departures or arrivals.
The plan to sell Manuel Ugarte will now have to be shelved after his serious injury on World Cup duty with Uruguay. Meanwhile, striker Joshua Zirkzee is still at the club, and sources have dismissed rumours around the exit of midfielder Mason Mount.
'Cunha gives Brazil something they have maybe never had before'published at 16:02 BST 29 June
16:02 BST 29 June
Image source, Getty Images
It feels like Brazil are on track, and a big part of that is down to Matheus Cunha. He is the key to a lot of what we are doing so well.
It is quite funny to be saying this because usually the Brazil public expects a classic number nine to be leading our attack, and Cunha is different to what the fans are normally looking for.
He is more of a nine and a half. Someone who can play like a nine, but also a 10 to link play and create for others.
So he is not like Ronaldo, Adriano or Romario, some of our great strikers of the past 30 years, but because he can also score goals - he has three so far at this tournament - he is not a playmaker, either.
Instead, he gives the team something that Brazil have maybe never had before, in terms of a centre-forward anyway.
Image caption,
Matheus Cunha's touch map in the 3-0 win against Scotland
In some ways, Cunha reminds me a lot of my old Liverpool team-mate Roberto Firmino in the way he is always dropping deep, and giving the defender marking him a doubt about what to do.
If the defender follows him, it gives more space and freedom to Vinicius Jr and Bournemouth's Rayan. If the defender leaves Cunha, then he has time to play between the lines, get on the ball and look for passes or shoot.
Cunha seems very happy and comfortable with his role, including the defensive side of it when he starts the press or plays almost like a number six in front of the midfield, and it seems to be working for the team in terms of the balance it gives to our attack.
Back home, more and more people are thinking Cunha is the answer and I just hope he continues like this.
Yes, other teams will know about him now, and what he does - but he is such a clever player, he will still not be easy to stop.
You're the scout! Which World Cup players do you want at your club?published at 11:46 BST 29 June
11:46 BST 29 June
Image source, Getty Images
We're now into the knockout rounds of the biggest World Cup ever and we want to know who has grabbed your attention so far - especially with the summer transfer window a couple of weeks into being officially open.
Which player has raised your eyebrows? Who has exceeded your expectations? Has there been a player you had no knowledge of consistently impress you?
Ultimately, who would you realistically like to see lining up for your team in the Premier League next season?
This is your opportunity to show off your talent-spotting skills - the floor (pitch) is yours...
And there's more - the BBC has launched live match updates so you can see the score directly on your lock screen through the full 90 minutes and beyond.
This means you can keep track of every game wherever you are - whether you're on the move, at work, or away from a TV. With live match updates on your lock screen, the score is always just a glance away.
This feature will also extend into the 2026-27 Premier League season, so you're never out of the loop.
United's midfield issuespublished at 10:30 BST 29 June
10:30 BST 29 June
Simon Stone Manchester United reporter
Image source, Getty Images
Since Manuel Ugarte's £50.8m arrival from Paris St-Germain in 2024 he has not reached the heights anticipated during his time at Old Trafford and his last appearance was when he started the home Premier League defeat by Leeds on 13 April.
It was widely anticipated he would move on this summer, either permanently or on loan.
Now those plans are in doubt after his injury at the World Cup, with thoughts at Manchester United focused on the wellbeing of the player.
United have prioritised strengthening their midfield this summer, with the expectation at least two or three new players would be added.
The club have already agreed a £35m deal for Atalanta's Ederson. However, plans for the 26-year-old to have his medical before the start of pre-season training on 9 July had to be scrapped when Ederson earned a late call-up to Brazil's World Cup squad.
Now the intention is for Ederson's medical to take place once Brazil's campaign is over and then the player to return to Carrington after the mandatory three-week rest period.
United had been keen on Elliot Anderson but backed out of discussions when the cost, both transfer fee and wages, they would have to pay to get him out of Nottingham Forest became clear.
Talks with West Ham over Portugal international Mateus Fernandes have yet to lead to an agreement over a fee, with Tottenham also keen on the former Southampton man.
United also rate Bournemouth's Alex Scott, who was one of four players who travelled with England for their pre-World Cup training camp despite missing out on selection in Thomas Tuchel's squad, and they had a bid turned down last summer by Brighton for Cameroon international Carlos Baleba.
It remains to be seen if a lengthy injury to Ugarte would affect the amount of money United have available to buy players.
Tuchel's praise suggests Rashford in line for another England chancepublished at 09:07 BST 29 June
09:07 BST 29 June
Phil McNulty Chief football writer
Media caption,
Marcus Rashford finally got his chance to press his claim ahead of Barcelona's Anthony Gordon in England's World Cup win over Panama on Saturday and did enough to suggest Thomas Tuchel should keep faith with the Manchester United forward, who had a successful loan spell at Barca last season.
Rashford was England's dangerman in the first half and also had opportunities after the break, although he was sometimes let down by a lack of support and some wayward finishing.
"We tried and tried. Marcus was just unlucky," said Tuchel. "He is pushing and pushing like always. Every time I bring him on, he is super reliable.
"Everyone is trying. I'm not upset with players who try. You need a bit of luck, you need momentum and we will get there."
They were words that suggested Rashford will get another chance in the last-32 tie against DR Congo in Atlanta on Wednesday (17:00 BST).