Schlupp has looked fantastic in the League Cup against League One sides and Cardiff reserves, but has looked a bit naive and lightweight in the Championship imo.
He has great potential if he can build on those though. Strength is something that can easily be worked on in the gym, hopefully he has the footballing brain to learn how to make better decisions as he gets more experienced against Championship quality defenders, some players (Levi Porter) never really seem to develop that though despite the potential. If he does, I reckon he could go on to play in the Prem, or certainly be a very good Championship player.