Coach John Groce suspended the sophomore forward and revoked his scholarship following an April arrest for underage consumption of alcohol and resisting arrest.
According to Groce, the arrest wasn't the only issue in Paul's short time on campus that factored into the punishment.
"After a thorough review of Darius' year, which includes multiple transgressions, I am suspending Darius from all team-related activities for the entire 2014-15 season," Groce said. "As head coach, my concerns are always what is best for the University of Illinois, what is best for the men's basketball program, and what is best for our student-athletes as people. I feel this penalty is necessary to help Darius as a person. We will continue to support him through this process."
Paul sat out last season after transferring from Western Michigan. He averaged over 10 points and nearly six rebounds a game as a freshman in his only season with the Broncos.
Groce spoke this spring about Paul's versatility, saying he could play both the center or power forward positions and had gained 29 pounds since arriving on campus.
After Tuesday's decision, Illini fans will have to wait another year to see what Paul can contribute.