When we take a look at the crazy transfer market this days, it's no surprise when certain price tags are put on players by their clubs, surely son wouldn't cost lower than that, and we all know Levy is a master in handling transfers/business, he knows how to get exactly the best deals. As for juve needing son, I do not feel he is the sort of player juventus needs, I doubt he'll even suit the Italian league/juve style of play.
He could be a nice fit in Manchester United, but the odds spurs would sell one of their key players to united would be so slim, except for a crazy amount.