Into the final half an hour in Germany. No goals in the second half but it's been a very good watch.

Two ghosts of Chelsea's past converge as Alvaro Morata replaces Diego Costa for Atletico Madrid. Remember that Costa will miss the second leg.

Danny Mills
Former Man City defender on BBC Radio 5 live

City are showing a real determination to get back into this game.

But let's not forget, at 2-1, going back to the Etihad, I would still say they are strong favourites. They only have to score one.

At home, 1-0, that's it, job done. They've got the away goal.

Sergio Aguero shoots wide, Ilkay Gundogan has one blocked - City doing everything but score...

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What a save that is! Atletico are piling on the pressure, Antoine Griezmann is in behind and either he or the last man loop in a lob which Wojciech Szczesny fingertips it onto the crossbar andaway!

Raheem Sterling gets into the area but can't get a cross away. Manchester City have been largely superb tonight but still trail. It's a funny old game Saint...

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He should score! Antoine Griezmann plays Diego Costa through on goal, he does everything right to hand off the final defender and looks certain to score but then screws his shot wide.

Clean through. Massive chance!

Image source, Reuters

Great tempo to this game now, being played like it's the last 10 minutes of the second leg.

If you're just joining us, Fernandino and Nicolas Otamendi will both miss the second lag because of suspension.

GREAT tackle on Sergio Aguero by Matija Nastasic as Aguero looked to get a shot away.

We are back playing in Madrid too, Juventus forcing an early corner. Comes to nothing.

Straight from kick-off City go close as Kevin de Bruyne turns his man on the edge of the area and hits a low shot which is deflected just wide. From the corner Raheem Sterling shoots wide. City riled?

Might as well change the rule so that any touch on the hand or arm is a foul, at least we'd know where we stand.

Away we go! Worth thinking about the fact that a 2-1 defeat with an away goal is no disaster.

Alasdair Brown: How can it be clear and obvious if it takes 4 minutes to decide?

The Oracle: So wait, VAR can see it’s a foul, but can’t see that the player who was fouled was offside? First pen was ridiculous too, he moved his arm away from ball.

Paul: You don't need to know anything about laws of handball other than its supposed to be that any handball has to be deliberate. No way did Otamendi deliberately handle that ball. Never a penalty.

Michael Brown
Ex-Manchester City midfielder on BBC Radio 5 live

It was probably the longest VAR in history deciding the right decision. I don't think they knew. Then finally they give the penalty.

Worth recalling that VAR was used well in the Atletico game, overturning an incorrectly-awarded penalty.

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The time taken to award the first penalty was definitely the biggest problem, for me anyway.

Loveof Football: The referee is doing his very best to be the talking point in the City game! It was never a penalty for Otamendi and the Fernandinho one is also debatable, City need to turn on the after-burner second half

Tom Gregory: Fernandinho banned for 2nd leg possibly worse news than conceding another goal. City have not played well without him this season

Lewis Kay: don't understand the first pen, if it takes 3 mins to come to a decision it can't be clear and obvious surely! I'm a United fan and I think it's harsh!

Michael Brown
Ex-Manchester City midfielder on BBC Radio 5 live

There's no way it's deliberate handball. Otamendi gets set, sees he's in trouble, that it's heading towards his arm. He very quickly tries to put it behind his back but the ball is hit that quick at his arm that he can't get it out of the way.

Gary Flintoff
BBC Radio 5 live reporter at Veltins-Arena

Pep Guardiola had a long chat with the fourth official after that penalty was taken and scored. The Manchester City boss was not that animated, but clearly wanted the process explaining.

The blue flags are flying now. What an astonishing turnaround. I don't think the Schalke fans can really believe it, but they are re-energised and making a lot of noise.