I think Conor's done. I think he believed his own press clippings, the loss to Diaz was above his real weight class, the loss to Mayweather outside his sport. Conor was still the best in the world. In his own mind.
Khabib didn't just beat Conor. He rolled over him. He beat him striking, counter-striking, wrestling and then submitted him. And drew a map for every other opponent. Conor is where Rhodna was after losing to Holly, he just playing it off better. He's terrified he's gonna come back and meet his Amanda. And after that, the entire 'Mystic Mac' myth will be gone. So he'll talk big, and make financial demands he knows the UFC won't meet, but he's painted himself into a corner. He'll only fight elite level talent, but he's bat-shit scared of all of them. He is NOT getting in a ring with Tony Ferguson, or Max Holloway or Jisting Gaetje, never mind Khabib.
Khabib called him a 'tapper', and then beat him with a neck crank. Which is painful, but NOT destructive. Rhonda didn't tap to Liz Carmouche's neck crank. Khabib said Conor is a guy who gives in to pain and then he proved it. Conor might submit to leg kicks versus Gaetje. No way he risks that level of exposure.