And it reached boiling point last on Friday night when UFC president Dana White offered Mayweather $25m to come out of retirement and fight McGregor.
Mayweather, who retired an undefeated champion in 2015, said he would make a comeback to face McGregor for a minimum purse of $100m as long as the UFC champion is willing to settle for $15m plus a minor cut of the ppv revenue.
"We tried to make the Conor McGregor fight", Mayweather said. Mayweather said his minimum is $100 million.
If Mayweather could sneak in a jab in a blur, he could also grab a piece of any action anytime he wants to.
Prior to McGregor's first bout with Nate Diaz last March, many questioned the jiu-jitsu skills of the Irish star. I'm the guy that can actually make the offer, and I'm actually making a real offer.
"I'm a businessman, when it's all said and done", Mayweather said in a televised interview with Showtime's Jim Gray. Mayweather laughed at the offer and told TMZ, "He's a f-king comedian".
GETTY Conor Mc Gregor drills Eddie Alvarez with a straight right at UFC 205
Up until this week, its all been good harmless fun, but no one really believed that Floyd Mayweather and Conor McGregor could or would meet in a boxing ring, for numerous reasons.
"To think you're the "A" side?" McGregor has never even made anything close to that off a fight.
McGregor became the first man to simultaneously hold UFC titles in two weight divisions when he beat Eddie Alvarez in NY on November 12.
Continued talk of a fight between McGregor and Mayweather, 28 and 39 respectively, has raised the age-old debate of whether or not a mixed martial artist can defeat a boxer in a boxing match. The last major fight that you were in [against Manny Pacquiao], you left such a bad taste in everybody's mouth that nobody wants to see you again.
A bout between the two would undoubtedly break all previous pay-per-view records, and it would be a fight into which the whole world would tune.
Money seems to be the biggest issue between both fighters.
Factory output rises in November despite demonetisation
Meanwhile, the industrial production grew by 5.7 per cent in November against contraction of 3.4 per cent same month past year . Capital goods production increased by 15 per cent in November compared to a decline in production by 24.4 per cent earlier.