I, like ParkLane1, have seen most if not all his matches at first team level live and have always tried to keep a particular eye on him and have never been impressed. That all being said and it is my belief he isn't anywhere good enough, I still feel he definitely deserves a chance at a season long loan in the championship at a side where he is going to be forced to sink or swim. A chance to actually earn his money and win bonuses and dominate games against seasoned professionals.
When you look at the difference between him and Winks in how they actually try to get through a game, I think the contrast is quite marked. Obviously totally different players but Winks has from the very start actually buzzed about with purpose, got involved and been quite positive when he has the chance. When Onomah has the ball or looks to support, I'm not quite sure what he offers and maybe he isn't sure either. Maybe underneath it all he doesn't believe in himself as much we would assume he does, who knows? I think the fact that no one can really define his specific position is probably a big issue and consequently what is really expected of him depending on where he is played in his limited game time.
Happy to be proved wrong but I don't see the talent there to carry him through with us but he definitely deserves and requires the opportunity to play week in, week out in his favoured position (whatever that may be) and come back to us more mature in body and playing ability.