NXT superstar Riddick Moss -- who also ruptured his Achilles last year and returned in "record" time -- says he can have Durant back on the court in 5 months. And, how can he prove it??

'Cause he did it himself!!

"This talk about KD being out for an entire season, missing next season, I don't like it," Moss says. "I don't wanna hear it."

"I wanna shut up all these people that are saying an Achilles rupture's gonna put you out for an entire season. Wherever you go, I wanna see you hoisting hardware at the end of the season in June."

Moss -- who is one-half of the Outliers in NXT, managed by Robert Strauss -- says he didn't miss a beat when he returned to the squared circle after his injury ... and is the guy to help KD get back to normal.

"Don't call Kobe Bryant for help. Kobe Bryant did not set a record coming back from an Achilles tendon rupture like Riddick Moss did. Kobe can't help you."

So ... maybe it's time to hit up this Moss fellow, KD??