The difficulties faced are for elite teams that are heightened to reach significant phases. Real Madrid will avoid distraction because they're the top team heading for straight winnings this season, not taking chances but pinning down their attention on La Liga and UEFA Champions League. Real Madrid we all know is interested in every major tournaments and they're never tired of lifting titles in the long run. Carlo Ancelotti will sort out techniques to implement because facing Manchester City in the quarter-finals is top challenge for them.
At this stage I don't think there's actually much difficulties been faced by these elite teams at this stage because these teams are not weak and are yet to get to the point they face themselves making it a tough game because there's usually a power tussle amongst them whenever the gat to meet each other at any point in the league especially such as the champions league or their domestic leagues.
It's common in the domestic leagues because that's where most of these players are really eager to get the trophy because their domestic league too aswell also help them make some money so they don't stay nonchalant enough about it and it's a good one, Real . Madrid is at this point an elite team looking at simultaneously too. Real Madrid looks like they got a very good strategy to perfectly acceptable the both trophies because they have got a good tems they could help them achieve that which they want to achieve almost at anytime.