To answer your question I can't really think of youth he brought through. He was better at getting exceptional older players to come to us and then be magnificent (Matt Upson, Wayne Bridge, Bruno, Vicente - ok only in flashes), he could certainly attract a player.
Apart from Dunk, Solly and JFC he didnt bring anyone through. To be honest Im not sure what more he could have done with the youth players available to him at the time.