Apparently, Jose Canseco is making his MMA debut in a few weeks against a 7-2, 330-pound South Korean.
That's the beauty of MMA - it's kind of like porn in that anyone can do it. You're just asked to go out and try to klck someone's ass. It's basic in that way.
If you've ever been famous for whatever reason, and you've hit rock bottom, porn (if you're a woman) and MMA (if you're a guy) will always be options for you - with some rare exceptions (and also some crossover).