Not all are always wonderkids in name, but they really deliver whenever I sign them.
I put my preferred players first and my second choices, should I have one, in brackets.
GK: Silviu Lung Jr. (Alphonse Areola)
DL: Joao Paulo (Joe Mattock)
DR: Diego Renan
DC: Nicolas Otamendi (Badstuber)
DC: Miles Addison (Marek Suchy)
MC: Fabian Delph (Marco Verratti)
MC: Sandro (Eduardo Salvio, Per Cilian Skjelbred)
AML: Sergio Mota (Radja Nainggolan)
AMR: Andrea Russotto (Giuliano)
ST(Target): Tomas Necid (Lacina Traore)
ST(Poacher): Andrej Kramaric (Adailton)
They might not be the very best, but they can all be realistically signed if you're not one of the top 5 teams in the world (except Delph who might be a bit tricky at first).
Off course my favorite wonderkid was Pascal, a Spanish left-back that forced Bale on the bench at the tender age of 17, but he was a regen.....