Let's get a wee bit of reaction from Hearts' defeat by Trabzonspor earlier on.

A game of few chances is goalless at the break.

Are Celtic on course for their first European points of the season?

Image source, SNS

Celtic play themselves into trouble, but Celta striker Ferran Jutgla shoots just wide from the edge of the box.

Kieran Tierney swings a lovely cross into a dangerous area and it causes panic in the Celta backline, but doesn't quite drop to Camilo Duran.

Moments later, Callum Osmand shoots high over the top.

An excellent sliding challenge from Dane Murray stops Aleix Febas' shot from heading towards the Celtic goal.

For all the high energy at Celtic Park, there still hasn't been a real chance of note.

Camilo Duran is playing on the shoulder of the Celta centre-backs, but it's not quite falling for the Colombian striker at present.

Javi Rueda has a pop at goal for the visitors, but it's high and wide.

Tom English
BBC Scotland's chief sports writer

Image source, SNS

It wasn't a penalty but it was a foul outside the box. No foul given, which is odd. Good contest, this.

Callum Osmand is Celtic's brightest spark.

The attacker beats his man down the left and creates space for the overlapping Kieran Tierney, whose cross is cleared.

Andy Burke
BBC Sport Scotland at Celtic Park

The Celtic fans are absolutely furious with that decision.

Celtic want a penalty as Callum Osmand goes to ground in the box.

The referee waves the appeals away and books Camilo Duran for his protests.

There was a push in Osmand's back, but on we go.

Canada head coach Jesse Marsch is an interested observer at Celtic Park tonight.

I hope he didn't come just to watch Alistair Johnston, who is next to Marsch in the stands.

Image source, SNS

Better from Celtic.

Haissem Hassan gets to the byeline down the right and floats a cross onto Camilo Duran's head, but his effort is straight at Ionut Radu in the Celta goal.

Pat Bonner
Former Celtic goalkeeper on BBC Sportsound

Celtic are under real pressure. They're sitting back and can't even get a tackle in.

Iago Aspas lets fly from the edge of the box as Celta turn the screw.

Celtic are hanging on a wee bit.

Andy Burke
BBC Sport Scotland at Celtic Park

There's a strong travelling Celta Vigo support and they are making plenty of noise.

Their team has settled well and controlling things so far.

Image source, PA Media

Celta burst into the Celtic box with real menace but Colby Donovan reads Javi Rueda's cross well and scrambles clear.

It's all a bit cagey as both teams feel their way into the contest.

No chances at either end yet.

A terrible pass gifts Celtic their first attack of the night, but Kieran Tierney's cross is straight at Celta goalkeeper Ionut Radu.

Celtic are penned in their own half as the Spanish visitors dominate possession in the opening minutes.