Seen on Sky Ballack reckon Ozil hasn't got acceptance from his teammates, he's low on confidence and I must admit I don't like watching other players having a go at him, it's kicking a guy when he's down and I don't personally think it helps a player like him. To me he doesn't look happy and having your teammates having a go isn't going to help that, different players react differently and IMO he doesn't react well to be criticised by his teammates.
To me he seems a bit soft and would benefit more form encouragement from other players etc.