Carlwell, a 6-11 center from Maywood, Ill. (Proviso East H.S.), played in just three games this year. He suffered a knee injury on Nov. 30, sidelining him for the majority of the season.
"Brian has faced adversity and dealt with injuries during much of his time here and feels it is in his best interest to get a fresh start next season," Weber said. "We appreciate the contribution he has made to our program and wish him the best, and we will support him in any we can regarding his future at another university."
"I'd like to thank the University of Illinois and the coaches for the opportunity I have had here, along with the fans and most of all my teammates for their support these last two years," Carlwell said. "The close friendships I have with my teammates has made this a very difficult decision for me. I am going to miss these guys, but I feel this decision is what is right for me at this time. I want to show my teammates the same support that they've given me, so I will continue to come to Assembly Hall and cheer them on as I finish the semester in good academic standing."