According to former Michigan forward Colin Castleton, he is withdrawing from the 2021 NBA Draft and is instead returning to Florida for his senior season.
Castleton, who was originally part of the Wolverines recruiting Class of 2018, was a four-star center coming out of high school.
After spending two seasons at Michigan, Castleton transferred to Florida. During the 2020-21 season, he averaged 12.4 points and 6.4 rebounds per game.
https://twitter.com/Castleton_/status/1411718680736681984