What sucks it is his right knee not the left where they took graft from patella tendon to repair ACL. Now in case he has ACL tear in right knee they will not use that tendon for graft with history like that.Sounds like he's out until training camp. "The treatment of partial patellar tendon tear is immobilization in full knee extension for 3 to 6 weeks in a cylinder cast. For partial patellar tendon tear maintenance of patellar height, cast or brace immobilization in full extension for 6 weeks followed by a therapy program to regain motion and strength may be appropriate. Progress must be slow to allow for tendon-to-bone healing. Strengthening exercises should be delayed for at least 3 months. You should go for the conservative treatment as surgical repair is done for complete ruptures. "