Why would you as a parent want to risk having a son, play D1 basketball coming of thyroid cancer if you knew he couldn't add weight/muscle? To be 6'8" and only 180-190 lbs would not want me as parent having a son playing basketball at this level just coming off cancer, just due to the physical pounding you can take.
I know we have seen/read all the stories about athletes coming back from cancer, but he looks like a gust of wind could blow him over compared to others. He will be a finesse player and not a post up type physical player. My point here is as his dad is also the coach, it just has to be a tough decision to whether to have him play or not considering what he went through. You pray to god that nothing happens in the future whether it be an injury or the cancer comes back. It's gotta be tough on mom and dad.