Real Madrid's midfield is very strong. Every player in the midfield is talented and experienced. Madrid's strong performance has a lot to do with their midfielders. If Luka Modric is sidelined for the match against Manchester City, Madrid does not have a suitable replacement. Apart from Luka Modric, Ancelotti has to develop his match strategy. If the match strategy is good, maybe the Madrid team will not miss Modrich during the match.
I have no idea why many people keep mentioning Luka Modric, this guy is really overrated.
He's already old, you can see his performance isn't that good anymore like the last year. Real Madrid currently depends on Kroos and Valverde, there's no other player has stable performance like both of them. Ancelotti will put a big hope to Camavinga and Tchouameni for playing this big match, since it looks like a gambling, I don't really believe they will beat Manchester City.
Manchester City has De Bruyne, Gundongan, Rodri and Silva, four of them are in the same level like Kroos and Valverde.
Although I am aware that Manchester City has talented players this season to defeat any of their opponents, Real Madrid also has midfielders like Modric and Kroos, along with some defensive players like Alaba and Rudiger, who are very smart to play as we do. I would like you to keep in mind that this is a game, and Real Madrid play a surprise game occasionally.
Real Madrid may be defeated by Manchester City, but it won't be an easy victory like that. Luka Modric won't be present for the first leg, I believe, due to an injury.