If Bbb is playing with bone on bone in his knee he's superman. The top of the shinbone and the bottom of the thigh bone have articular cartilage between them. Having recently had a joint replacement because of lack of this cartilage, I can tell you that it is so debilitating that to even walk to the letter box was a chore, let alone playing and training for football. I don't doubt he has issues in this area but bone on bone is b.s. The only fix will be a knee replacement which gives you your life back but I'm afraid his playing days would be over. He is just delaying the inevitable.