No, but Chelsea wouldn't be who they are now if it wasn't for Mourinho and City may not have won anything or qualified for the CL this season of they stuck with Mark Hughes.
During our invincible season, Chelsea spent a ton of money under Ranieri but won nothing. Did they win a cup? You can't just throw a team together and expect them to gel, football doesn't work like that and we see it all the time in club football and even on the International stage. This is why I'm worried about the amount of changes we're about to make to our first team.
We saw how two new CB's got on during the season and how exposed our left side was because Arshavin wasn't tracking back. If we ship out out a load of first team players we'll have this same cohesion problem all over the pitch.