(CNN) UFC president Dana White has fueled speculation of fight between Floyd Mayweather Jr. and Khabib Nurmagomedov, but wants it to happen in the octagon.
The Russian, who recently beat Conor McGregor on his long-awaited return to mixed martial arts, triggered rumors of a mega-fight with Mayweather after calling out the former boxer.
The 41-year-old Mayweather, who came out of retirement for in 2017 to beat UFC's McGregor in a money-spinning bout, has also teased the possibility of fighting for Nurmagomedov.
The boxing great has fought 50 professional fights without defeat; the younger Russian has a 27-0 record.
But White is not keen for another of his star fighters to make the switch to boxing again.
"If Mayweather wants to fight, come fight in the UFC," White said to TMZ.
"We're not boxing again. We did that once, it's over. You wanna fight? You come fight, a real fight."
UFC president Dana White is not keen for another of his fighters to make the switch to boxing.
Mayweather finishes McGregor in 10th round
Floyd Mayweather Jr. lands a right hand against Conor McGregor during their boxing match in Las Vegas on Saturday, August 26. Mayweather
stopped McGregor in the 10th round, collecting his 50th victory in what he said will be the last fight of his undefeated pro career. It was the first pro boxing match for McGregor, a mixed martial artist who is the UFC's lightweight champion.
McGregor lands an uppercut early in the bout. He came out aggressive and took the fight to Mayweather in the first few rounds.
McGregor sticks his tongue out at Mayweather during an early exchange.
McGregor swarms Mayweather at the start of the fight.
The much-anticipated fight was held at the T-Mobile Arena in Las Vegas.
After a typically slow start, Mayweather started to force the action more in the middle rounds.
McGregor might have lacked in experience, but he had a clear size advantage.
There were several awkward exchanges when McGregor would end up behind Mayweather.
The two fighters trade punches in the middle of the fight.
Mayweather landed more punches than McGregor -- 130-60 -- in rounds six through 10. McGregor had a 51-40 edge in the first five rounds.
McGregor started running out of steam later in the fight, and Mayweather capitalized in the 10th round.
Referee Robert Byrd stopped the fight in the 10th after a wobbly McGregor took several hard shots and wasn't throwing punches.
Mayweather and his father celebrate the victory.
The two combatants embrace after the fight.
Demi Lovato sang the national anthem before the fight.
McGregor entered the arena first, draped in the Irish flag.
Mayweather came out in all black and wore a mask.
There were many celebrities on hand to watch the fight, including basketball star LeBron James. Behind James is boxing legend Mike Tyson.
Actress Jennifer Lopez and her boyfriend, former baseball star Alex Rodriguez, take in the fight.
Actress Charlize Theron sits close to ringside.
A fan waves an Irish flag before the start of the fight.
READ: UFC's Khabib Nurmagomedov targets Mayweather bout
READ: Dana White suggests UFC 'never going to change' after trash talk fuels ugly brawl
Lingering suspension
Nurmagomedov is currently suspended from fighting in the UFC after the ugly scenes that followed his fight with "Notorious" last month.
After forcing the Irishman to tap out, Nurmagomedov and his team launched an assault on McGregor and his team.
The Nevada State Athletic Commission, which governs the sport, unanimously ruled to uphold the fighters' suspensions last week until the end of its investigation.
Khabib Nurmagomedov is suspended from the UFC after the ugly scenes that followed last fight.
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Despite the suspension, White has already suggested the Russian should face American lightweight Tony Ferguson before thinking of a fight with Mayweather.
"Tony Ferguson is the right fight," he said. "It's the fight to make. It obviously depends on the suspension and what happens, we'll see."