Tyson Fury and Deontay Wilder exchange punches
(Image: Getty Images)
Mendez said: "Congratulations, it was an incredible fight. You're an incredible fighter, an incredible human being. I really like your style.
And Khabib added whilst coaching two fighters in sparring: "We're here, doing our job. Let's go guys! Let's go. Look at these guys. Congratulations again brother."
Fury is likely to defend his WBC heavyweight title against mandatory challenger Dillian Whyte in December.
Boxer Tyson Fury and his father John
(Image: Getty Images)
But his father John doesn't want Fury to fight Whyte and thinks Oleksandr Usyk is the only opponent he should face.
Khabib said before Fury's trilogy with Wilder that he ranks him above the likes of Canelo Alvarez and Usyk in the pound-for-pound list.
He told ES News: "Right now? I truly believe Tyson Fury is the best. Heavyweight and undefeated and he beat everybody.
"Like very close, like Canelo [Alvarez], [Oleksandr] Usyk, [Terence] Crawford, like all these guys very close. It's just my opinion like top like Tyson Fury right now."
Khabib retired from MMA after submitting Justin Gaethje to improve his undefeated record to 29-0.
His manager Ali Abdelaziz admitted Khabib was close to making an appearance in the ring after being offered $100 million to fight ring legend Floyd Mayweather.
But Khabib turned the offer down after promising his mother he wouldn't fight again following the death of his father Abdulmanap last year.
Abdelaziz said on Mike Tyson's Hot Boxin' podcast: "Khabib got offered $100 million after he was retired to fight Floyd Mayweather. $100 million… $100 million, and you can ask Floyd, you can ask everybody.
"Khabib said, ‘No, I’m retired. I told my mother I’m retired. I’m going to keep my word to my mother. 'If my mother told me to fight again, maybe I would, but right now, she told me not to fight'."
Get the latest sports headlines straight to your inbox by signing up for free email alerts
Tyson Fury's massive net worth after Deontay Wilder win – as he nears Anthony Joshua's wealth
Tyson Fury’s surprisingly 'posh' upbringing, dad's spooky prophecy and family tradition that banned sex before marriage