Gary Flintoff
BBC Radio 5 live reporter at Veltins-Arena

Image source, Getty Images

The pitch could be interesting tonight. It looks like it has recently been relaid. It has the look of a patchwork quilt in places. It is a retractable pitch here in Gelsenkirchen. In fact, we have parked our hire car in the car park where the pitch normally goes when it moves outside.

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

The quadruple is possible - with this squad and their ability. Pep Guardiola knows when to rest the players and when not to.

It's a case of ticking over, trying to do their best every game. Yes, recovery is important, but there's so many games. Whether they can keep the standard, that'll be the telling moment.

Danny Mills
Former Man City defender on BBC Radio 5 live

Pep Guardiola has a huge squad of quality players and he's rested them intermittently through the season. It sounds bizarre but I think the fact they are still in four competitions takes the pressure off a bit because they're probably going to win two.

They want to win the league or Champions League. One of those is almost a must. If not, I think it will be considered a disappointing season from the standards they set last season.

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Manchester City boss Pep Guardiola has won the Champions League on two occasions as a manager (2009 & 2011, both with Barcelona); a third trophy would equal Zinedine Zidane, Carlo Ancelotti and Bob Paisley’s record.

He’s also reached the semi-finals in seven of his nine previous seasons as manager but hasn’t made the final since 2011.

Danny Mills
Former Man City defender on BBC Radio 5 live

Manchester City have been amazing of late. And let's be honest, this is one of the easiest draws in the Champions League.

Schalke are struggling in the Bundesliga, they managed to get through their group, but I'd be surprised if Manchester City don't win this by a couple of goals.

Gary Flintoff
BBC Radio 5 live reporter at Veltins-Arena

Image source, .

How do you get the Schalke fans going in the Nordkurve Gelsenkirchen? Simple, you stick on a bit of Status Quo! Whatever You Want in case you were wondering.

Image source, BBC Sport

There has been a mega mix-up and the players' shirts have been delivered to the wrong dressing rooms all around Europe!

Can you match the correct shirts for these superstar players to wear for their big Champions League match?

Have a go here.

Andy West
Spanish football writer

I'd love to see Atlético go far in the Champions League but I fear for them against Juve. Atlético just are not playing at all well and haven't really had a sustained strong spell all season.

This Atlético squad has plenty of potential, but the team has lots of issues: - Godin, Filipe Luis, Juanfran looking their age - Uncertainty over best midfield pairing - Lemar not reaching expectations - No consistent partner for Griezmann - General lack of fluency from front to back

Image source, Reuters

Cristiano Ronaldo has scored only one goal in his past eight Champions League games, after scoring 11 in his previous eight.

He has failed to score in four of his past five Champions League games against Atletico.

Image source, Getty Images

Schalke boss Domenico Tedesco: "There is nothing like a knockout match in the Champions League against a team that is one of the best in the world.

"We've worked a lot to be able to play such a game and have fun. Logically, we see a chance of winning, but of course we aren't the favourites.

"Manchester City are a very strong team, we will need a red-letter day and have to give it our all."

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

Pep Guardiola will want a quick start, he'll want to put the tie to bed.

Looking ahead to the Chelsea game in the Carabao Cup, what type of team, energy and performance will it be?

But this is the Champions League and this is an opportunity to put the tie to bed very early. City have been fortunate in the draw so they've got to make sure they perform.

There are seven Manchester City changes to the side that beat Newport in the FA Cup last time out and it is close to their strongest XI.

Danilo, John Stones, Oleksandr Zinchenko, Phil Foden, Riyad Mahrez, Gabriel Jesus and ex-Schalke winger Leroy Sane all drop out.

In come, Kyle Walker, Aymeric Laporte, Ilkay Gundogan, Kevin de Bruyne, Bernardo Silva, Raheem Sterling and Sergio Aguero.

Man City XI: Ederson, Walker, Laporte, Otamendi, Fernandinho, Gundogan, De Bruyne, David Silva, Bernardo Silva, Sterling, Aguero.

Former Manchester City defender Matija Nastasic plays for Schalke against his old club but another former City man Rabbi Matondo is on the bench.

Ex-Tottenham midfielder Nabil Bentaleb is in and Salif Sane (no relation) starts too.

Schalke XI: Fahrmann, Caligiuri, Nastasic, Sane, Oczipka, McKennie, Bentaleb, Serdar, Uth, Mendyl, Bruma.

Bad news about Sami Khedira - but good news that he seems to be on the mend...

Atletico Madrid striker Alvaro Morata drops to the bench against his old club in one of five changes from their 1-0 win over Rayo Vallecano.

Diego Costa, Juanfran, Koke, Rodri and Thomas Partey all come in. It's Koke's first game after a month out with a thigh problem.

Santiago Arias and Angel Correa drop to the bench, Vitolo is left out and Lucas Hernandez has a knee injury.

Image source, .

Cristiano Ronaldo starts for Juventus as he continues his quest for a sixth Champions League title. Paulo Dybala and Mario Mandzukic start up front with him.

Juve make three changes from the side who beat Frosinone 3-0, with Alex Sandro, Blaise Matuidi and Miralem Pjanic coming in.

Sami Khedira is out for a month with a heart problem, with Joao Cancelo and Emre Can also dropping out.

Image source, .

BBC Radio 5 live

John Murray on 5 live - tune in now - reckons it's Laporte at left-back with Fernandinho at centre-half, while our friends at Opta have gone 3-2-2-2-1.

It will be fluid, whatever.

Image source, Opta

Image source, Getty Images

Schalke's best run in the Champions League came in 2010-11 when they lost their semi-final 6-1 on aggregate to Manchester United, who were beaten 3-1 by Barcelona in the final. Schalke did not qualify for the Champions League in the past three years.

Image source, Getty Images

Thumbs down if you have no memory of Darron Gibson scoring past Manuel Neuer in a Champions League semi-final...

Gary Flintoff
BBC Radio 5 live reporter at Veltins-Arena

Image source, .

Blue is the colour here in Gelsenkirchen. This is a one team town and the fans will turn out in force tonight. I have spoken to one or two of them and they weren’t too confident about their chances.

The trip to Schalke should bring back memories for Leroy Sane, who graduated from the German side's youth academy. Even though he's only on the bench...

It was not always guaranteed that Sane would make the grade, with the winger taking time to emerge as one of the star players in his age group.

"When he was 15 I'd heard of him but I didn't really pay much attention to him because in his first two years at Schalke he didn't play much," explained Der Westen journalist David Herten.

"He sat on the bench most games and he wasn't regarded as one of the most talented prospects at his age. When he turned 17 he had this amazing rise. He suddenly became the star for Schalke at the under-19s."

Laporte at left-back? Fernandinho in the middle?