I would keep him in squad. He can be a CM,DM,CB. Very good option for depth. Surely he is not that will all imagine years before, but he is better than Padoins and Pelusos.
In Panathinaikos will be a key player if he is healthy. But i can't see Bouy to be a starter for Juve. I will see some Panathinaiko's matches and confirm about his progress.
Marchisio is surely not world class, but a true Bianconero and solid player. Y'all forget the first year of Conte's era or matches like this he done against Celtic.
impressive year in Serie B! But IMO, he will never by a starter for a team like Juve. Not only him, but the majority of Italian CF's-Strikes who are ''talents''.