Agau's injury occurred about three weeks ago during workouts.
The 6-foot-8 forward played in 19 games for the Cardinals last season as a freshman, averaging 0.9 points and 1.1 rebounds in five minutes per game. The Omaha, Nebraska, native was a four-star, Top 100 recruit according to Rivals.com.
On Tuesday morning, Agau posted what he called a pre-surgery photo in a hospital gown on his Instagram:
- Molly Geary