Real Madrid boss Jose Mourinho believes Manchester City will win the Champions League "sooner or later".
And speaking before Tuesday's meeting in Madrid, City boss Roberto Mancini agreed that they will win the trophy at some point in the future.
Mourinho said: - With the direction the club is going, sooner or later they will win the big cup.
Mancini added: - I am sure we will arrive to win this trophy in the future.
Former Chelsea manager Mourinho compared the investment made at City to that at Stamford Bridge under owner Roman Abramovich.
Mourinho delivered two Premier League titles at Chelsea but was unable to add the Champions League - which he has won with Porto and Inter Milan - to the club's trophy cabinet.
Chelsea eventually won the trophy last season under Roberto Di Matteo and Mourinho is confident that City too will conquer Europe.
He said: - I don't think it is very different to Chelsea.
- Since Roman bought the club, (Claudio) Ranieri was the first coach, then I came and we won the first league, some cups and some more titles.