If Ancelotti has decided to leave, it means he already has a plan for his future career in another place. The latest rumor I heard, he is expected to be the coach of Brazilian national team. Anyway, there should be always some good coaches to be the next Real Madrid coach. Recently, I read in one of popular football news sites that Klopp is possible to be the replacement. Well, we know that Xabi Alonso was rumored to move to Real Madrid since the last season. However, Perez may change his mind, so there will be a chance for another name. I personally still expect for Zidane, but it seems a rather small chance.

You said Ancelotti is genius, it is non-sense that you claimed Ancelotti isn't good in tactical. I think there is no problem with Ancelotti's ability in tactical aspect, he only can't apply a proper tactic for the current Real Madrid squad. Also, Ancelotti has lost some of crucial players that makes his tactic doesn't work well anymore. The new players still can't play as Ancelotti's plan. Moreover, other teams have already improve much. It makes Ancelotti to be difficult to compete with other teams. Yep, it may be time to leave and the new coach may use a better tactic for Real Madrid.