We have experienced something similar but with the likes of Emiliano Lawrence & Ishe Samuels Smith in recent years.
The two of them would of probably made there first team debut's by now if they stayed with ourselves, even if it was just an appearance or 2
(In Samuels Smith's case, probably only a Mykolenko injury away from a real chance of playing week in week out.)
They will probably get some excellent loan moves at some point due to the contacts the likes of City & Chelsea have, but sometimes that isn't best for a young player and they get caught up in the system.
I think over the next 5 years we will see a lot more movement of players from 14-18 across al sorts of PL sides.