Ben Hansbrough, Tyler's little brother, plays on Tavares' team. Watching the first half of that Real Madrid game, it's pretty clear he's not playing with some great passing guards, and they're definitely not looking for him inside. But Tavares showed a nice little unblockable hook shot, and he appears to have a standing reach at that all time NBA elite level, like higher than Shaq's, and around where Lucas Nogueira and Rudy Gobert measured out at last year, 9'6-9'7 or something crazy.
He gets up and down the court well enough and can move around pretty well defensively, though you would still describe it as lumbering compared to most NBA players. His ft form looks great, and if he had good passers around him he could live at the ft line. He can dunk from like 4 feet away from the hoop, not jumping toward the hoop but just straight up, and his hands are huge so he always has a good grip on it.
Nogueira and Gobert are more mobile than Tavares, but he has a big strength advantage on those guys. He's going to make even Embiid look "small".
Still a project, but he is already experienced in the best league in the world outside the NBA. He seems to compete very hard, is physical, and is obviously a menace as a rim protector.
Still hard to place him in the draft, but I bet he sneaks into the first round.