The YouTuber-turned-boxer has been repeatedly calling for a blockbuster bout with the UFC‘s poster boy for over a year.
And while McGregor, 33, would be the huge favourite, Javier Mendez believes the Problem Child is ‘too big’ for the Notorious.
He said: “I would favour Jake Paul at 175 over Conor in a boxing ring because he’s too big.
“But you can’t count Conor out, Conor’s a good boxer, so you can’t discount his boxing ability.
“But the size is a little much, Jake Paul hits extremely hard as you can tell by what he’s done.
“If you haven’t woken up to Jake Paul’s ability they better because he’s only improving.
“So I think the size is a big difference and the power would be too much for Conor.
“Sometimes you can be bigger and not punch harder, but in this case Jake Paul is bigger than Conor and punches harder and he’s good, so all three variables are with Jake.
“He’s just a bigger man fighting a smaller man. Jake Paul also isn’t necessarily a novice anymore. He’s experienced in dealing with high pressure fights, and he’s proven he’s able to handle that pressure.
“So it’s a big man versus a little man and the big man just so happens to have more firepower.”
Mendez, 51, beat Conrad Pla by split decision to win the vacant ISKA Light Heavyweight Championship in 1995 during a career where he won hundreds of kickboxing fights.
The Mexican has since worked with Nurmagomedov and a number of other fighters including Daniel Cormier and Islam Makhachev at American Kickboxing Academy, helping the Dagestani wrestler defend his lightweight title three times.
He also rubbished Paul’s claims that boxers get paid more than UFC fighters.
The 51-year-old added: “Who is Jake Paul talking about when he says the UFC guys need to get paid better?
“The lower guys on the shows get better paid than just about anybody else out there.
“It’s just the pay-per-view numbers that need to be worked on.
“The UFC pays great in comparison to other organisations – apart from the pay-per-view – compare the UFC to boxing and see who pays more.
“The UFC does. The UFC has guys on the undercard that get paid more than boxers do in the main event.
“Just look at the numbers with the exception of pay-per-view – those numbers are different. But outside of that the UFC pays great.”
These quotes first appeared on the Betway Insider US blog.