Mexican superstar Canelo Alvarez is not a big fan of the potential fight that Floyd Mayweather is attempting to pitch.
Mayweather has been discussing the idea of a comeback, to fight Khabib Nurmagomedov - after he was recently challenged by the UFC lightweight champion.
"We're fighting," Mayweather told TMZ Sports. "I'm my own boss. I can't say what's going on on Khabib's end, but on my end we can make it happen."
Khabib challenged Mayweather over the weekend, after coming face to face with Mayweather's company CEO, Leonard Ellerbe, at a boxing event in Russia.
Khabib successfully defended his title earlier this month at UFC 229 with a submission win over Conor McGregor, who stepped out of the octagon and into the boxing ring last August to take on Mayweather.
McGregor lasted 10 rounds, with Mayweather ultimately breaking him down and stopping him - to raise his perfect record to 50-0.
Mayweather retired after the McGregor fight, but now he's pondering the idea of a comeback against Khabib and then a rematch with Manny Pacquiao.
When asked if the potential bout with Khabib would be a boxing or mixed martial arts matchup, Mayweather was candid with his response.
"Who's the 'A-side?' He called me out, so you have to come to my world," Mayweather said. "I seen in an interview, he said when he hit Conor McGregor, he knocked Conor McGregor down. He said I didn't knock him down. OK, Khabib. You got my leftovers. Whoop-dee-do."
Canelo, who was dominated by Mayweather over twelve rounds in 2013, has been eager to get the opportunity for revenge.
In the opinion of Canelo, Mayweather taking part in contests against UFC fighters like McGregor and Khabib are only hurting the sport.
If Mayweather wants a real return, Canelo is urging him to do the right thing - make the rematch.
"He wants to continue hurting boxing by making fights that don't make sense ... and not giving boxing the credibility it deserves," Canelo tells TMZ Sports.
"If he wants to return, I ask him to look my way to give a great fight to the fans. Let's do the second fight. It's very important. We have something pending there, so let's make the second fight."