It sounds like a shoulder abscess, that was Irrigated, debrided, drained, and now on antibiotics.
If they closed the incision, he may be able to compete in 1 month.
If they left it open, to heal by secondary intention (which is most often what I do) there is no way he will be on that stage, unless they let him pose with a 4X4 gauze on his shoulder.
N.B. Lee with a 4x4 gauze on his shoulder or even an amputated arm for that matter would still destroy the likes of Jack London?

? there is no way he'll lower himself to compete against these turds.