He's like a counterfeit Swiss knife. Not exceptionally special at anything, but good enough for many things. A really good player to have for depth.
But honestly, I don't understand how people still fail to see how Allegri does not think he's a pure TQ. Remember when he was first signed how he was given that role, and obviously Allegri didn't like it enough and picked Vidal over him every chance he got.
That should tell anyone that under Allegri Pereyra will never be the first choice AM. More of a last resort, emergency due to injuries/suspensions. Hell, he's not even being picked for the starting 11 this season. Which i think is BS, he's been playing good Football.