He’s looking at being a 7 ft 5 version of Jayce Johnson at the very least. He’s not your typical 7 ft 5 beanpole with no meat on his bones. He actually has a more filled out body than Johnson did at that age. Saw a video of him shooting free throws and he has proper shooting form as far as I can tell.
He seems like an upgrade over Jayce, who was pretty much just good at getting in the way on defense. Matt should be able to do that at least, and much more effectively. He averaged almost 6 blocks a game in high school. No way does he not end up being at least a little useful (assuming he is healthy enough to play).