First and foremost, I wish nothing but the best for Brady. The knee brace he had on in the photo is definitely a sign of a significant tear, either ACL or MCL. Hopefully he gets healthy.
IMO, I think he will be stepping away from wrestling. The kid has given everything he's had to this sport, in multiple disciplines and has been very successful, he just can't seem to make it a full season without an injury. With the recent concussion, and now possible ( probable ) knee surgery. He may be thinking about his body down the road rather than next years wrestling season.
I have thoroughly enjoyed watching him wrestle. When he was on and healthy, he was extremely tough to beat. I hope I'm wrong in this prediction, but if that was the last time I watching Brady in the blue and white, it was a pleasure. Whatever he chooses, I wish him nothing but a HEALTHY best.