I don't think sacking Lucho at the end of this season is a good idea. He is a good manager, professionally. Moreover a strong personality coach like him is a must for managing a team of this calibre.
Forget about no-name coaches who will hardly get any respect from super stars in our 1st team. They will just end up like what happenned to Benitez in Madrid a few months ago.
What we need to do when this season ends, is to upgrade the quality of our bench. Drastically and comprehensively. Players like Munir, Sandro, Batra, Mathieu, ... have to go, because they are simply not good enough. Arda Turan might have to go too. He is great, but he is not suitable to our playing style. We need players who are more skilled with the ball.
Of course we still have to rely on MSN. If we know how to use this trio properly (for example, do not let them get overloaded), we will win every possible trophy.