Watched a couple of his games in the first team towards the back end of last season, and overall, and I think he'll do ok, even if I've got some reservations about him. Though the reservations are less important in our current situation.
He's technically pretty good, seemed to lack a bit of confidence going forward, but then again man utd did in general last season, and he was a teenager playing in front of 70k, but did seem willing to keep getting forward as much as possible. Hopefully he can gain a bit of confidence by playing regularly and we might have a gem for the season.
He is a bit lightweight which is again to be expected for his age, and looked a bit suspect defensively. It's a shame ikiekwe was let go, as he probably needs that strong leadership next to him to guide him.
Again this is based on maybe three matches I happened to watch a few months ago, but he had enough about him for me to at least take note.