How long has been in MMA training? Less than a year? He is learning and trying to give himself the skillset needed. He is raw now, but I think he has potential.
He has been in mma longer than a year but that was only his fifth professional fight. Being in his mid-thirties his age is a factor. Most successful mma fighters come in with a base skill to start from (wrestling, bjj, judo, boxing, etc.). I have nothing against the guy but there is nothing that makes me believe he has any potential. I have seen turtles better off their back. They will put him against some cans for a couple wins and he'll probably get lucky with a punch against someone better than him but I just don't see him having a lot of success. Luckily for him the heavyweight class is not very deep.
So far, overall I think this is one of the weakest casts for TUF yet.