Even the most thorough crash course might not be able to prepare McGregor for a technically sound fighter like Mayweather, analysts warned. A victory for the Irishman would be a monumental upset.
Conor McGregor probably won't turn out to be a very good fight, but both athletes will leave the ring a lot richer than they entered the bout.
"I estimate that this fight might be the biggest single decision for us of any single event ever", he continued. The first thing to think about when it's suggested that Mayweather may have lost some of his skills after two years of traveling the world in his private jet.
Conor McGregor and Floyd Mayweather Jr. have finally agreed to what some are calling a mega fight, others are calling an embarrassment, and I'm calling great cinema.
We're on going to tune in regardless, when the two enter the ring inside the T-Mobile Arena in Las Vegas on August 26.
"Look, I love boxing", he said.
When Mayweather, 40, defeated Filipino Manny Pacquiao on points in May 2015, the fight set a new American pay-per-view record of 4.6 million buys.
Neither Mayweather nor McGregor has been very shy when discussing his finances in the past, though that will change somewhat in regard to the upcoming super fight.
"Easy fight, easy money for Moneyman (Mayweather)", said Penalosa, who predicts a late-rounds KO win of a "entertaining fight". "It is the unknown factor (of fighting a MMA star)".
After splitting two high-profile bouts with Nate Diaz, McGregor knocked out Eddie Alvarez to add the organisation's lightweight title in December previous year.
"People always think it's a game or it's an act", McGregor - a 6/1 underdog according to bookmakers' opening lines - said.
"All sides involved are pretty happy with their deals". "Nobody is bummed out".
Either way, Mayweather-McGregor is coming, whether you like it or not, and it will dominate most of the chatter across both boxing and MMA over the coming couple of months.
On the other hand, this will be uncharted territory for McGregor.
Correia expects it to be a tough fight for McGregor.
McGregor is expected to earn at least $80m (£62m), although a percentage of that is likely to go to the UFC.
Ellerbe said Mayweather can't afford to take McGregor lightly. McGregor's biggest pay-per-view draw to date drew 1.6 million.