Schalke have to show more ambition now.

Former Tottenham midfielder Benjamin Stambouli drags a shot wide.

At the other end...

City almost double their lead.

It's Sergio Aguero again, twisting left and right in the area, but scuffing a shot straight at goalkeeper Ralf Fahrmann.

Pat Nevin
Former Chelsea and Scotland winger on BBC Radio 5 Live Sports Extra

Dinked straight down the middle, with no power at all. It was a gorgeous little penalty from Aguero and he had figured out that the goalkeeper, all hyped up to save it, was not going to stand in one place.

What a massive relief and City are 4-2 up with the opposition now having to score three.

Video Assistant Refereepublished at 20:34 Greenwich Mean Time 12 March 2019

20:34 GMT 12 March 2019

Man City 0-0 Schalke (agg: 3-2)

VAR does have a look, but the referee tells the goalkeeper to get on his line.

Pat Nevin
Former Chelsea and Scotland winger on BBC Radio 5 Live Sports Extra

I don't think Bruma gets any of the ball and he was just using his physicality. The referee was absolutely spot on. Bruma was not looking at the ball and Bernardo Silva was not getting the ball so he didn't need to do it.

Former Chelsea man Jeffrey Bruma booked for the challenge.

He's asking French referee Clement Turpin to check VAR.

Jeffrey Bruma bundles into Bernardo Silva in the box and the ref points to the spot.

Image source, Reuters

City have created few chances but Sergio Aguero does find a yard at the back post, but can only head tamely straight at goalkeeper Ralf Fahrmann.

Doctor Joker: Madrid are missing out on this! What a header by Ronaldo.

Cristiano Ronaldo scores his 122nd Champions League goal.

Atletico Madrid have 118 overall.

GOAT?

Pat Nevin
Former Chelsea and Scotland winger on BBC Radio 5 Live Sports Extra

Manchester City do not look like Champions League winners at the moment - they are playing within themselves at the moment. The opposition are staying as deep as possible and that's just really tough to break down.

City not firing at their best, but they will be content if it stays like this for the rest of the game.

Schalke need to score two remember.

Chris Bevan
BBC Sport at Etihad Stadium

It is not just the away supporters who are in good voice tonight. The City fans have been making plenty of noise themselves and they have all just been out of their seats for a rendition of 'stand up for the champions'.

Whatever the Schalke fans have been singing about tonight, it does not include that particular ditty - the last of their seven Bundesliga titles came in 1958, and they are unlikely to change that this season because they are currently 14th in the table.

France World Cup winner Antoine Griezmann has a pop from outside the area.

It is swerving through the area and Juve goalkeeper Wojciech Szczesny flaps at it a little to push it away.

But Alvaro Morata was jumping for the ball from an offside position and the assistant's flag goes up.

City winger Raheem Sterling senses the danger and is covering Kyle Walker inside his own area and clears the ball.

He has turned into a brilliant player under Pep Guardiola.

Atletico get their first sniff of goal, but midfielder Koke's shot from 30 yards out is not troubling Wojciech Szczesny.

Image source, AFP

Pat Nevin
Former Chelsea and Scotland winger on BBC Radio 5 Live Sports Extra

The longer it goes, Schalke will have to come out and that back five will have to move forward, but when that happens I don't think they will have the quality to then stop City.