Lucas Moura if you don't mind paying good money. Ganso is also another good choice too, but he's pricey, and his physical stats are nothing impressive (they got worse since FM11). Javier Pastore if you want someone who has solid physical stats to back up his technical and mental abilities as well. Walter Mintillo (Cruzerio) looks pretty solid as well. Giuliano (Dnipro) has potential, same with Coutinho, Shinji Kagawa, James Rodreguiez (Porto), and Erik Lamela.