The players asked for their release and the university accepted, leaving them free to play elsewhere.
Mitchell, a junior, started all but one game before being suspended on Feb. 7. He never returned to the Crimson Tide lineup. The Swainsboro, Ga., native was second on the team in points per game (13.1) and rebounds per game (7.0). Coach Anthony Grant said at the time of the suspension that Mitchell was sent away not for a single incident, but "an accumulation of things."
Mitchell played in 89 games at Alabama and averaged 12.7 points and 6.7 rebounds per game during the past three seasons.
Grant will start the 2012 season without his top two leading scorers and rebounders as forward JaMychal Green moves on after graduation.
Hankerson was a role player for the Tide and averaged 11.3 minutes per game. The sophomore combo guard appeared in 30 games this season and averaged 3.6 points per contest.