According to renowned boxing journalist Gareth A Davies, negotiations are ongoing for a rematch between Floyd Mayweather Jr. and UFC lightweight champion Conor McGregor, with the fight taking place inside the octagon, rather than the boxing ring.
Rumours of an MMA bout between the two have been swirling for some time, and Davies told TalkSport's Jim White his sources say the negotiations are taking place:
"My soundings are that there are a lot of talks going on in the background, there are a lot of talks around people with Mayweather.
"There are a lot of talks about him potentially having an MMA fight with Conor McGregor.
"Conor McGregor had no chance in a boxing match with Floyd Mayweather.
'People will tune in to see Mayweather get stopped by Conor McGregor and it won't affect his boxing record.
"I think it's going to happen and I think it will be a three, four, five hundred million dollar fight again."
Mayweather has previously denied rumours he was considering fighting in MMA, per MMA Weekly, but he has also hinted at the move―most recently via social media:
McGregor has made it clear he wants the rematch to happen, via TMZ Sports.
The two met inside a boxing ring in August 2017, with Mayweather extending his perfect record to 50-0 via a stoppage in the 10th round. McGregor, who had never boxed as a professional before, put together a remarkably good performance for an inexperienced boxer, and his positive showing immediately led to rumours of a rematch.
The Notorious hasn't fought in the UFC since 2016, when he won the lightweight title off Eddie Alvarez at UFC 205. MMA fans are eagerly anticipating his next move, as there are several high-profile challengers in the lightweight division, including interim champion Tony Ferguson and his next opponent, Khabib Nurmagomedov.