I don't expect Real Madrid to return to the final and win the title, that would make their fans more arrogant and disrespectful to other teams. Manchester City must beat Real Madrid regardless of whether they can qualify for the final and defend their title, that is something that must be done so that the Champions League becomes very competitive between each team.
Real Madrid is of course known for its great history as the king of the Champions League title. It has made the average fan arrogant and booing other teams' fans all the time, so something has to change and any team including Manchester City should be able to stop them again this season.
The draw was really bad for Real Madrid, not only they have to face the current champions during the quarterfinals, but in the case they win, most likely they will have to play against Bayern Munich, still we cannot discard the possibility they get to the final, and if that is the case Real Madrid will most likely be the favorite, however I will advice you that you ignore their fans, since it is obvious that if a team enjoys as much success as the fans of Real Madrid, they will think their team can beat anyone no matter what.