First, Floyd Mayweather ... next, Mike Tyson??
That very well could be a reality for Logan Paul ... 'cause Iron Mike says he's now down to box the YouTube star -- claiming the fight could earn the two a fortune!!
Tyson revealed on his latest episode of "Hotboxin' With Mike Tyson" that he'd have zero issues stepping into the ring with either Logan or Jake Paul ... adding the scrap could net a $100 million payday.
"Hell yeah," Tyson said when rapper Freddie Gibbs asked if he'd box the two YouTube stars.