Just watched the video above. With the obvious caveat that this is a pickup game and not live NBA, I find it really hard to believe this guy won't be an NBA player.
New rule: Whoever in the future points to TJ McConnell as a comparison for this kid should have their posting rights suspended for a decade.
As to this year, I actually think at this point we are understating the contribution he will play this year. This is not a typical rookie: he's been developing for four years in college and is roughly the same age as Jayson Tatum. Perhaps he doesn't have the room to grow as some younger draftees, but by the same token he has an outside chance to have a Malcolm Brogdon-type rookie year.