Conor McGregor and Floyd Mayweather could get into the ring together this year
But UFC chief Dana White, who owns McGregor’s contract, has offered each fighter £20m up front and a share of any pay-per-view profits to make the bout happen.
However, Mayweather has laughed off the suggestion due to McGregor’s relatively low level of wealth.
Conor McGregor: 10 things you didn't know about the UFC star
Wed, November 23, 2016
Express Sport reveals some hidden facts about the UFC star
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When McGregor travels for fights, he always needs to carry a passport for his shoes as certain states restrict certain materials. His favourite pair are made from crocodile skin
“Before you ask for $25m, be worth more than $25m,” Mayweather said.
“You have the “2” and the “5” right but you meant to say $2.5m not $25m.”
How much is Conor McGregor worth?
McGregor is a comparative rookie when held up against Mayweather.
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Conor McGregor is a double UFC champion
While the boxer made his pro debut in October 1996, the Irishman did not enter the octagon until March 2008.
And while McGregor is now a global superstar, the mixed martial artist did not even join the UFC until 2013.
But he has sold more than a million pay-per-view packages on four separate occasions with fights against Jose Aldo, two against Nate Diaz and the recent clash with Eddie Alvarez.
Floyd Mayweather spends most of his time promoting fights these days
The 28-year-old is one of the most successful UFC fighters of all time with his overall net worth estimated at £17.85m.
While McGregor's figure is substantially less than he wants to be paid for the Mayweather fight, it is far more than the American seems to think he is worth.
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How much is Floyd Mayweather worth?
Mayweather is estimated to be worth more than £500m after 49 fights unbeaten as a boxer.
The American began promoting his own fights towards the end of his career to maximise his own profits and founded a lifestyle brand called ‘The Money Team’.
He now works full-time as a promoter and was the man behind James DeGale’s recent unification title fight against Badou Jack in New York.