I just don't think TC has the offensive game to be attractive to NBA teams. His natural position is as a 4 but he only has a partial 4 game. Most 4s now are expected to shoot the three, if you can't you'd better be exceptionally good at other things. Plus Tyler isn't tall enough, I've never believed he's 6'9" more like 6'7". With the strength of his game being an inside game in the NBA he would be banging inside with guys that are taller and just as strong.
I don't know that TC will ever have have the touch necessary to become a good shooter. Anybody remember that air ball free throw he shot down the stretch last year?
The guys that are going to make it in the NBA are the ones that really, truly work on their game on an ongoing basis. you can't measure heart. Fred VanVleet of Toronto comes to mind, hometown - Rockford, IL, college - Wichita St, draft status - didn't get drafted, height - 6'0" but there he was making a major contribution in the playoffs this year.
Another that comes to mind is PJ Tucker of the Rockets, hometown- Charlotte, NC, college - Texas, drafted *- second round by Toronto where he eventually got waived and was out of the league, spent 5 years playing in backwater overseas leagues where he developed his game. He never did become a good shooter although he developed an adequate corner 3 shot but he honed his defensive skills, always played with heart and effort and at 6'4" or thereabouts competes as a 4. He earned it.
Who knows where TCs game will take him.
Now watch me be wrong! I hope he gets drafted but I just don't see it.