Bill Carmody said freshman center Chier Ajou will sit out the rest of the season with a knee injury and will apply for a medical redshirt.
Ajou has played a total of 30 minutes in seven games this season and had eight points and four rebounds.
A native of South Sudan and a cousin of Bulls All-Star forward Luol Deng, the 7-foot-2 Ajou averaged 14 points, nine rebounds and 2.6 blocks for St. Thomas More (Conn.) last season.
"He's had knee problems for the whole year so he can do very little," Carmody said. "He can run but not very fast and then his knee swells up."