Logan Paul is set to take on Floyd Mayweather -- the only man to have ever defeated Canelo -- in an exhibition match in February.

So, we asked Canelo how he felt about the event -- considering he's been calling for a rematch with Floyd for years.

Shocker, Canelo ain't thrilled about it ...

"Ya know, it’s all about the money," Canelo told us through a translator ... "I don’t think we would agree that people that are basketball players, that are YouTubers get licenses. Ya know, I don’t criticize [the Paul brothers]. This is a very risky sport, and if you go up there, it’s very risky."

With Logan's brother Jake calling out top fighters for a high-profile boxing match -- we asked Canelo if he would be down for a quick payday.

"No," Canelo said matter of factly ... "I truly believe that it’s a lack of respect. It’s all based on money. It’s all for money. I’m focused right now on other projects."

"I have other stuff going on, and I would invite him for a sparring session so that he truly knows what it’s all about."

When asked if he felt the Paul brothers were disrespecting the sport -- Canelo summed up his feelings this way: "For true fighters, I do believe it is a lack of respect."

Canelo has achieved both fortune and fame from boxing -- not only is he one of the highest paid athletes in the world, he's also shared the ring with top level opponents.