Mayweather 'coming out of retirement,' working on event with Dana White

Floyd Mayweather appears set to return to the ring, or perhaps the Octagon.

The undefeated boxer, who told Rory Carroll of Reuters earlier this month that he was finished with the "brutal sport" of boxing, announced Thursday that he will come out of retirement in 2020.

Mayweather said in another Instagram post Thursday that he and UFC president Dana White are working together on an event.

This wouldn't be the first time Mayweather crossed paths with the mixed martial arts promotion. He fought former UFC two-division champion Conor McGregor in 2017, and both fighters earned lucrative paychecks.

White reposted Mayweather's announcement on his Twitter but has yet to disclose specific plans for the apparent 2020 event.