Kansas guard Greene has surgery to repair torn hip labrum
The Jayhawks are serving as Team USA for the tournament in Gwangju, South Korea.
That still puts him on pace to be ready for his junior season.
Greene started two of 35 games for Kansas last season, averaging 5.7 points. He shot 40.4 percent from beyond the arc, and went 5 for 5 from 3-point range while scoring a career-best 19 points in a 75-70 victory at Georgetown in December.