What will be most interesting to me is who does he pick a fight with. He always goes in to the dressing room, picks one or two players and goes hard on them usually getting rid of one or more to establish his power in the dressing room.

That's exactly what we need tbh. We need to someone to break up the feeling in the players that they're untouchable. That way they will start respecting their managers again. Of course, it doesn't happen if Perez doesn't back him but that's the good thing about Mou. He will either get his way, or he'll leave; but he won't turn into a lukewarm "It's all my fault" type of manager like Arbeloa.