I think you can see many players who definitely won't make it at Premier League level but there is also a litany of examples where that isn't the case, the most recent being Kane who didn't look special at youth level also what about Kevin Gallen - scored 100 goals in a season at youth level and never made it. There is no rule to who will or won't make it - Ian Wright made it in his early/mid 20's didn't he? There are very very players who are prodigies at that age and they definitely are not the rule for writing off players this early.