CHAPEL HILL, N.C. – North Carolina graduate transfer Cameron Johnson suffered a torn meniscus in his left knee during practice on Monday, the school announced.

Johnson underwent surgery at UNC Hospitals Wednesday afternoon and his recovery timetable is four to six weeks.

The Moon Township, Pa., native joined the UNC Basketball program prior to this season after playing for three seasons and graduating with honors from the University of Pittsburgh.

“I’m extremely disappointed for Cameron,” said head coach Roy Williams. “The young man has been working hard to blend in with our team after being such a productive college player the last two-plus seasons.”

Johnson missed the season opener on Nov. 10 against UNI due to a sprained neck. The injuries are not related.

He started every game for the Panthers last season and averaged 11.9 points, 4.5 rebounds and 2.3 assists in more than 33 minutes a game.