19 Years :S
He can be good for your team I think, he isn't player from U21, that depends of the country and how is your U21.
With this potential, maybe, just maybe, he can be a NT player, IF GOOD TRAINED!
I don't have a big experience, but I have a suggestion. What do you think about to train defense until a good level, and later to train passing? That's the basic of skills of a Point Guard! Jump Shot and Jump Range is necessary too, and the Handling and Driving is much necessary.
I'm not sure of this, I prefer see other suggestions, but is a good player, and I think that he will be good PG!
Good Luck!