Interesting, and of course Thon Maker came to mind.
Jayson Williams thinks he was much older as well. Imagine if it was discovered that he was indeed 50 in his last year in the league. Also, he supposedly died at 48, Google images of him in 2009, looks older than 47/48 to me.
I really wouldn't be surprised.
https://sports.yahoo.com/manute-bols-birthday-allegedly-made-mightve-played-age-50-220526309.html