We have to be sure that they're good enough, that's the thing. If they're not going to improve upon Yoshida then there's no point. We can't bring players through the academy for the sake of it. If they've performed well at that level we'll be able to let them go with hefty sell-on clauses, give Yoshida a new contract and then if we do get an opportunity to improve on him then we should be able to get a decent fee for him as well as he has performed at Prem level.