There is more to it. Many players do not develop fast enough for the Clubs patience. So is it the players fault not developing fast enough or is it the clubs failing to have enough patience. Only because a player does not make it HERE, it does not been he has not been good enough. Some players even did not want to make it here, so are they also not good enough? We do not know what players Borini, Rajkovic and Stoch will become but they have, they have all left for different reasons, none of them being "considered not good enough". In any case it is far to early to say they never would have made it. A players success is almost as much down to him being managed right as down to his potential.