I personally would like to see Henderson fight Forrest. I'm a big Forrest Griffin fan so it pains me a little to say that... but it's a big enough fight to push at least as a co main event, if not the main event.
Forrest is all but checked out, and as much as I love the guy, he either needs to officially retire or step up his game. Hendo will force one of those outcomes most definitively! I really have a hard time seeing Henderson losing as well, so they most likely won't lose a contender... and if Forrest should pull it off, then they can push their golden boy one last time.