McLaren is good on tactics, but he's never struck me as tough enough. That said, his record is excellent (ignoring England, which I tend to do these days) and with Bally on his shoulder no player is going to take the piss. As for Reidy, it's a no from me. You can just never go back like that. I suspect even Mourinho will struggle a bit and he has an enormous budget to work with.
Man City won what they did inspite of Mancini rather than because of Mancini. I do not fancy he has the will or desire to take on the battle that lies ahead for the next manager.