Given his personality, and his stubbornness, I cannot imagine him landing a Big Job anywhere. He simply isn't the glad-handing, Happy Talking Salesman type. Plus, I'm not real sure he wants a Head Coaching job anymore, because I believe he hated the public relations aspects of it so much. Not to mention the time. Would he be a DC somewhere? Maybe. He wouldn't have all the annoying responsibilities, but would still be doing the two things he loves: Football, and molding/guiding young men. But, he wouldn't do it for just anybody, and there's probably a lot of guys who wouldn't hire him because of personality, or out of fear they'd be pushed out in favor of him later. Plus, it would eat up all his time about as bad as a Head Coaching gig. There's still a lot of West Africa to be seen, and a lot of reefs yet unexplored...
My prediction is that he becomes a Program Mentor or Program Analyst, outside the chain of responsibility, not having to deal with all the aggravation, but still immersed in the world he so loves and able to influence it. And, he would still have time to get out and live while he can still enjoy it.