https://sports.yahoo.com/brennan-rigsby-enters-transfer-portal-221104545.html

As the article states, after the loss to Creighton, Rigsby  stated he wanted to remain with the Ducks and the next week he enters the transfer portal.  Something tells me he might have been forced out.  It's no secret that his shooting and defensive deficiencies led to his poor play in the last month of the season.  In his defense, he is a role player that should have played about 12-15 minutes per game but with all the injures he was a starter playing a lot of minutes.  With only eight scholarship players available, the team as a whole finally ran out of gas.