But when we pressed ... Faber told us he's definitely not slamming the door on the possibility of getting in the Octagon again.
"I'd never put extreme limits on myself. I would never say, 'this is it, this is it.' I mean, somebody might really piss me off and there might be a golden opportunity. You never know."
"But my mentality right now is I'm gonna have this fight. I'm gonna go out with a bang and make it a meaningful and heartfelt one."
If it does end up being his last fight, Faber says he's already set up a pretty sweet 2nd career for himself in Hollywood -- with a bunch of movies and TV projects -- and says he's even working with the guys from "It's Always Sunny in Philadelphia."