At first he had the right attitude, but as time whent I felt that he wasn't happy about his constant sub position and after a while he just broke down mentaly.
And as for him not enough chances, there must have been some reasons we can't possably know because we don't have enough information what went in trainings and lockerroom. In my opinion he has no one to blame but himself.
And what do you think of him having too much pressure in Parma, how would he cope with it in Juve?