I don't see the logic in purchasing Toure. It's another African DEFENSIVE midfielder that goes MIA in the middle of the season. Yaya Toure wants Juventus because he was shut out at Barcelona. My guess is that he'd leave for the Premiership after two seasons out of frustration of not playing three consecutive games.
On the other hand, Xabi Alonso wants Juventus because he wants to play for the shirt, if not for anything else. Who on this forum would say that he/she likes the directors after they casted you aside saying you weren't versatile enough? That's a player who wants to play for Juventus.