Right now, he made a solid business move.
If he had stayed, his chance getting to NBA wasn't going to happen. He would end up in G league.
Best chance for him to get a shot at NBA was finding a school that will take a chance on him and hopefully earn an invite to combine.
Either way, no matter what happens, I don't see him making NBA roster down the road. Likely G league or overseas. Him leaving the program actually doesn't hurt us at all. Oats is looking at players and if we can pull in certain players, this team will be loaded and experienced.
Don't fret... Let the process play out.