The more serious this hip injury appears to be, the more likely that he may just call it quits. He's made more money than anyone of us can imagine, he's achieved beyond what most NFL QBs have and there comes a time when your health and well being down the road dictates your time is up. It is not hard to imagine that he would see himself there.
I know we'd all love to get a pick for him, but really, if he does bow out, he becomes one of those rare and commendable single team players. He's no HOFer, but he's high up in the Ravens ring of honor.