You can disect entire game like this and find fault for every player. He has never been spectacular defensively, but nonetheless decent defensive capabilities coupled with unique (for defender) passing skill is what keeps him at Juve. One of his tasks has always been to take the pressure off our midfield and help with build up, which he is rather good at and we have seen improvements already. Unless he starts scoring an own goals and commiting serious blunders, he will be integral part of starting 11.