Johnson, a sophomore, averaged 10.8 points and 3.7 assists per game. However, he was inconsistent with his play, part of the reason Purdue was willing to let him leave, according to a source.
"Ronnie has expressed his interest in transferring from our program and we have granted him his release," Purdue coach Matt Painter said. "We wish Ronnie the best of luck as he continues to pursue his education and basketball career."
This was largely a mutual decision, with each party looking for change. The Boilermakers added senior guard P.J. Thomson to their 2014 class on Monday, setting up a replacement for Johnson.
A possible landing spot for Johnson has not yet been decided.
Boiler Sports Report will continue to update this story as it develops.