Jesus gives City early lead on night to narrow agg score
Guardiola sent to stand after confronting ref at half-time
Salah chips in before Firmino settles tie
Roma beat Barca 3-0 on night (4-4 agg) - Italians go through on away goals
Football social on Radio 5 live following games
Man City 1-0 Liverpool 1-3 agg
Lovely ball by Kevin de Bruyne and Raheem Sterling is in behind the Liverpool defence. He again tries to find Gabriel Jesus but the forward can't get the required touch.
Manchester City pick up the ball and come forward again. No respite for the visitors at the moment.
Roma 1-0 Barcelona 2-4 agg
Roma giving this a real goal as Patrik Schick flicks a header wide.
Not seen much from Barcelona in attack as yet.
#bbcfootball or 81111 on text
Paul: We've got one of those 'eccentric' refs tonight. Nothing in that from Mane - he slipped!
Ash: A foul is a foul but does Otamendi need to roll around like he’s taken stunt classes?
Image source, paMan City 1-0 Liverpool 1-3 agg
... Kevin de Bruyne plays it low to Leroy Sane in loads of space on the edge of the area but his shot is blocked by Virgil van Dijk before David Silva is flagged offside following the Manchester City corner.
Man City 1-0 Liverpool 1-3 agg
Dejan Lovren slides in late on Raheem Sterling on the edge of the area on the left. Real chance for Manchester City now...
Man City 1-0 Liverpool 1-3 agg
Tempers already simmering as Sadio Mane catches Nicolás Otamendi and Manchester City goalkeeper Ederson is straight out of his area to give the referee his views on the foul. Mane is booked but both sets of players have to be careful. A sending off could be decisive either way in this tie.
Image source, ReutersMan City 1-0 Liverpool 1-3 agg
Chris Waddle
Ex-England winger on BBC Radio 5 live
He's got a lot of energy tonight Kevin de Bruyne.
However he just needs to calm down, because he has so much quality but he is rushing things at the moment.
Man City 1-0 Liverpool 1-3 agg
Just over 10 minutes in and Manchester City haven't really threatened to add to that early goal. Kevin de Bruyne had half a chance but rushed his shot and lashed well over. The hosts looking perhaps a bit too keen to get the deficit down to one sooner rather than later.
Man City 1-0 Liverpool 1-3 agg
Chris Bevan
BBC Sport at Etihad Stadium
The Anfield atmosphere made a difference in the first leg last week and City fans are certainly doing their bit to try to create that sort of intensity at Etihad Stadium, and rattle the Reds.
They have not stopped singing since the game started and are on their feet roaring their side forward whenever they get the ball. Whenever Liverpool get the ball, or Loris Karius dawdles over a goal-kick, the jeers and whistles are deafening.
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Paul: Clear foul on Van Dijk. Sigh...here we go.
Tom: For me Karius' poor distribution put Van Dijk under lots of pressure there which lead to the goal.
Man City 1-0 Liverpool 1-3 agg
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Man City 1-0 Liverpool 1-3 agg
Liverpool finally get their foot on the ball and win a corner as Nicolás Otamendi puts behind from a Liverpool throw. It's played short and worked to Trent Alexander-Arnold, who sends in a decent cross but it just evades the lurking Liverpool players.
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Bezaleel: Manchester City strike early and fast...Here we go
Jamie: The comeback is on!
John: Here we go. Ladies and gentlemen, fasten your seatbelts. Attack, attack, attack is the word tonight.
Phil McNulty
BBC Sport chief football writer at Etihad Stadium
Exactly how Manchester City wanted it. Sloppy from Virgil van Dijk and Liverpool cut wide open.
Fair to say that has got the home crowd going.
Edin Dzeko (6 mins)
Is this to be the night of comebacks?
A simple ball over the top by Daniele De Rossi catches out the Barcelona defence, Edin Dzeko brings it under control with one touch before the former Manchester City striker slots in with his second touch.
Image source, Getty ImagesMan City 1-0 Liverpool 1-3 agg
It's relentless from Manchester City as they come forward again, this time through Leroy Sane on the left. There's nothing on for him, though, and the attack breaks down.
Image source, ReutersMan City 1-0 Liverpool 1-3 agg
Chris Waddle
Ex-England winger on BBC Radio 5 live
I've got to say nine times out of 10 Van Dijk get as a free kick. But Raheem Sterling reacts quicker and sets up Gabriel Jesus to score.
Image source, getGabriel Jesus (2 mins)
Perfect start for Manchester City!
Virgil van Dijk is looking for a foul and gives the ball away as he hesitates, prompting City to break forward through Raheem Sterling. With Van Dijk out of position there's loads of space in the Liverpool defence and Sterling squares for Gabriel Jesus to finish.
Just the start Pep Guardiola was after. We've got a game on here!
Image source, reutersMan City 0-0 Liverpool 0-3 agg
Early opportunity for Manchester City as they win a free kick over on the right. Kevin de Bruyne swings it in, decent delivery, but Alex Oxlade-Chamberlain hooks the ball away.
The hosts starting as they mean to go on.
Man City 0-0 Liverpool 0-3 agg
Stephen Warnock
Ex-Liverpool defender on BBC Radio 5 Live
If there was a risk to Mohamed Salah I think he would be on the bench. And save him if they need a goal.
If he is playing for the sake of it, there is a chance you can lose him for the rest of the season.
If Liverpool score I'll bet he comes of straight away.