At the moment, I can't really make up my mind over whether he's good enough to play for us.

I don't think it really, matters at this point but for what its worth he was one of our more consistent players last season. Thats not to say he set the world alight. He could still do a job for us in some capacity and is far above the MLS. Think he'd be a good signing for any team fighting for Europa League or even Champions League outside of England (e.g. Schalke) if they could get him on lower wages. His only real drawback is his fitness. Still a good midfielder and certainly no worse than what we currently have to partner Pogba.