I dunno. Sure he's got his weaknesses but he could be good. I like keepers with good one on ones and reflexes, agility is a concern though.
IMO blooding young keepers is just about the hardest thing on the game to do.
Stick him on the bench, bring him on for half an hour if you're two or three up, and see what happens.
If he can handle it, try him from the start against the weaker teams. If he's a disaster, ship him out on loan. If he's somewhere in between, keep doing it and try to give him a bit of match experience where you can.