I don't think buy back clauses should be allowed. An academy produces a player, the club don't think he is or will be good enough, therefore the club sells him. If he does become good enough or better than they thought then its their mistake. Its unfair to the club that bought the player and gave him a chance. If you want him now (after hes developed) then pay what hes worth now, not what you thought he would be worth back then. Okay I'm lost now, point is - buy back clauses are for pussies.