UFC president Dana White says there is more chance of him being Tom Brady's back-up quarterback in Super Bowl LI than there is of agreeing a super bout between Conor McGregor and Floyd Mayweather Jr.
For months, boxing great Mayweather and McGregor – the first man to hold titles in two divisions at the same time in UFC – have been involved in an ongoing spat.
But the chances that their verbal sparring will end with the duo mixing it in the ring appear remote.
Indeed, White rates it as more likely that he will be Brady's replacement for the New England Patriots against the Atlanta Falcons than a Mayweather-McGregor fight materialising.
"I think the odds of that happening are about the same as me being Brady's back-up quarterback on Sunday, that's how close I think the odds are," he told BBC Three.
"I mean if you look at the Mayweather versus [Manny] Pacquiao fight, look how long it took to make that fight and those guys are in the same sport.
"I never say never, anything is possible, but this one is pretty impossible, but never say never."
White also said there is still no decision from Ronda Rousey regarding her future following a devastating 48-second loss to Amanda Nunes inDecember.
"In my conversations with Ronda she hasn't told me she's retiring," he added.
"But from the conversations we've had I kind of feel she might be winding down and ride off into the sunset. Who knows she might freak out and come back.
"Either way she's the greatest decision I ever made and I love her, she's a good friend of mine. What she's done for sport and for women in sports is unbelievable."