He's not a ****, and he's not 'hated' as far as I'm concerned.
He's let himself, his teammates, and coaching staff down very badly by (apparently/allegedly) being unprofessional.
I've never changed my opinion since my first viewing of him. In my opinion, he's not a very good defender, and is a good, but limited, footballer generally. On this season's form, he's been one of our weaker players, and not good enough for a regular place.
In a nutshell, his alleged bad attitude and underwhelming performance have made him expendable.
In my view, he's probably engineered this move, most likely he or his agent having been 'tapped up' by Bayern.
As I say, he's not a ****, and I wouldn't go as far as to say that he's hated on BM. However, I'd be very surprised if you told me that he's the sort of player/person you want to see in a City shirt.