The news for Derrick Rose isn’t completely devastating but it’s also not good. When he went down with a right knee injury in the third quarter of the Bulls’ loss to the Portland Trail Blazers Friday night, it was immediately feared that he had torn his right ACL and would be done for the year. While the injury isn’t quite that serious, the team announced on Saturday that he has a meniscus tear in his right knee and will require surgery.He’s out indefinitely.Bulls guard Derrick Rose sustained an injury to his right knee against the Portland Trail Blazers on Friday night.Subsequent examinations and an MRI confirmed a medial meniscus tear to his right knee, which will require surgery. Rose is out indefinitely, and will not accompany the team on the rest of its current road trip.Surgically repaired meniscus tears can keep players out anywhere from eight weeks to four months, depending on the severity of the tear and the type of repair done during the surgery. Some players have returned quickly from removing the damaged portion of the meniscus or the entire meniscus. However, that has long-term effects that can shorten the career of an athlete with the wear-and-tear from bone on bone rubbing in the knee.By repairing/re-attaching the meniscus, it can leave you sidelined for months much like we saw with Chase Budinger of the Minnesota Timberwolves last season. Until the doctors perform the surgery and see exactly what they’re dealing with and how they go about treating the injury, we won’t know the timetable of how long Rose is expected to be out.He missed all of the 2012-13 season after tearing his left ACL in the first game of the 2012 NBA playoffs. He was slow to round back into form in the early parts of this season after being away from real games for 18 months. The Bulls are currently 6-5 in the Eastern Conference and have struggled to regain their dominant form from the 2010-11 and 2011-12 seasons when Rose helped lead them to a record of 112-36.