AMAZING PICKUP.... however. I would sell him. Due to his amazing potential and the fact that you are still in a lowish league i don't think you can build this guy up to be the best player that he can be. You could always train him some and sell him later but with his skillsets, if you sold him now you could easily pickup 2 million bucks in my opinion. Then you could do three things
1. Buy another rookie or two with a little lower potentials (P.allstar-Superstar probably the best)
2. Expand you arena
3. Buy one or two key pieces for your team.
Selling him could really benefit your team more than if you kept him in my opinion.
Murray/Harris/MPJ/Grant/Jokic - 2020 NBA Champs