Angle -- who's been doing commentary for Bellator -- recently appeared on "The Roman Show" and was asked if he'd ever step out from behind the media desk ... and into the ring.
Angle says there's a VERY SMALL chance he agrees to a fight -- since he's 47 years old now -- but if it does happen, he's already thought about who he wants to fight.
"Of course, I'm not going to fight a guy in their prime," Angle said ... "It's obviously gonna be one of the older guys. But if it does come to fruition, it'll be a helluva fight, whether its Kimbo Slice, Ken Shamrock, Dan Severn ... or even Royce Gracie."
He added, "If I do decide [to fight], it'll be with a Hall of Famer ... it won't be someone in their prime in their early 30s, no way, not now."