As comfortable as you like for Arsenal, who could feasibly have been ahead by an even bigger margin.

Bayern Munich are in control at the break thanks to two goals from former Premier League players, albeit not the one you'd expect.

Leroy Sane and Serge Gnabry have done the damage. Andre Onana hasn't had his best half.

Almost a third. Leroy Sane keeps a crossfield ball in using his head, shuffles inside Diogo Dalot and curls a shot just wide of the far post. Inches.

Just the one minute of injury time.

Image source, Getty Images

David: Arsenal looking dynamic - apart from Havertz who looks lost. He's drifting around aimlessly and his teammates don't seem to want to give him the ball.

Ken: Arsenal laying down a marker early doors.

James: I've gone from thinking, 'I hope Arsenal do okay', to thinking we could go pretty far in this season's CL.

This game is being played at walking pace at times. Bayern are happy.

Ben White gets tangled up with Sergino Dest and the Arsenal defender receives the first yellow card of the game.

Excellent defending from Bayern's Dayot Upamecano. Marcus Rashford races onto a long ball down the left, you'd fancy him to beat the centre-back for pace but Upamecano uses his strength to hold off Rashford and let the ball run behind.

Mikel Arteta could have trolled everyone tonight and played no goalkeeper because PSV have offered so little in attack.

Leon Goretzka's long-range shot is blocked by Christian Eriksen. That is only the second Bayern shot not to end in a goal tonight.

Phil McNulty
BBC Sport chief football writer at Emirates Stadium

Game very much over.

Arsenal have been in a different class to PSV Eindhoven and that supremacy is reflected in the scoreline. A deserved goal for Gabriel Jesus, who has been top class so far.

What a return to the Champions League for The Gunners.

Napoli were given a penalty against Braga when Victor Osimhen was judged to have been fouled, only for a VAR check to show the striker had been the one who fouled his opponent and the decision was reversed.

Benfica's Angel di Maria, the ex-Manchester United winger, nearly scored direct from a right-wing corner but the inswinger came back and hit the post. Salzburg still lead that one, with the Portuguese side down to 10.

I've seen a few texts and tweets mischievously point out that David de Gea is still available if United need another keeper...

Image source, Reuters

Tim: I'm saying it now. This team is NOT any better under Ten Hag. He's had time but I see absolutely no difference for all the money spent.

James: What did I say? Opposition teams can see it, armchair pundits can see it, so why can't Ten Hag see it?

Anon: Ten Hag's "Culture" seems to be to mix Jose's demoralization of players with Rangnick's terrible results. It seems a long way back to Ole's "feel good factor".

United will be hopeful they can score tonight. Rasmus Hojlund heads wide from Diogo Dalot's cross.

The concern for them is whether they stop Bayern scoring again.

PSV win a couple of corners in quick succession, the latter headed wide by Southampton loanee Armel Bella-Kotchap.

United captain Bruno Fernandes balloons a shot well over the bar from long range.

Image source, Getty Images

Serge Gnabry has scored seven goals in his last six appearances against English clubs in the Champions League, also netting against Spurs (four) and Chelsea (two).

This was his first goal of the season in any competition.

Just over 10 minutes to go until the break and Arsenal are very comfortable.

They've dropped off a little bit at the moment and are not quite throwing players forward in search of a third, but they don't really need to to be honest.

Image source, Getty Images

Stephen Warnock
Former England and Liverpool defender on BBC Radio 5 Live

They have upped the tempo, Bayern Munich, it is a lovely play from Musiala.

The pull back is lovely back into Gnabry's path and it is a clinical finish from Gnabry.