Khabib Nurmagomedov wants NOTHING to do with Conor McGregor -- turning down a rematch AND a chance to coach against the Irishman on an upcoming season of "The Ultimate Fighter."
It's all according to Khabib's manager, Ali Abdelaziz, who tells TMZ Sports his client thinks Conor is nothing more than "human trash" and never wants to work with him in any capacity ever again.
Here's the deal ... Khabib is set to fight Justin Gaethje for the lightweight championship on Oct.