I think some of his football has been as good as it gets but his team usually let in several goals per game & imo that's partially down to players like him who are not much fitter than pub players & can't cover when the oppo get the ball.
If he was to play for a top team, the rest of the team would have to be willing to fill the holes he leaves in midfield, which get bigger & bigger as the game goes on, or alternatively have him playing instead of one of the forwards.