Coach David Richman says Dupree was unhappy with his role. Richman says he supports Dupree, but not Dupree's decision.
Dupree had played in all 17 games for the Bison this season and started 14 of them. The Milwaukee native was averaging seven points, three rebounds and two assists per game.
The 6-foot-3 Dupree's best moment might have come in the opening round of the 2014 NCAA Tournament. He came off the bench as a true freshman and scored four straight points in overtime to spark an 80-75 win over Oklahoma.
The head coach at the time, Saul Phillips, called Dupree's performance the ''loudest two minutes in the history of the NCAA basketball tournament.''