TMZ Sports reports that Buffer, famous for his saying "Let's Get Ready to Rumble", is being targeted for the super fight.
In a chat with Buffer's brother and business manager Bruce, TMZ Sports confirms that a contract is being negotiated.
The deal has the potential to be the biggest of Buffer's career.
"As his manager, it is my job to make sure that he makes the proper payday for the big fight that's about to happen," Bruce tells TMZ Sports.
"I can assure you that Michael Buffer's quite well taken care of," he added.
The fight is scheduled to take place on May 2 in Las Vegas.