You think Khabib is motivated by PPVs buys?
Sorry, but
Remember what Khabib said. "In russia, we have russian link"
I can't see it being for money, but I can entertain that possibility for conor. Here's the scenario I have:
I can only see maybe if Conor beats poirier, beats gaethje, and beat them in quicker fashion than Khabib.. People will start saying, Wow, he got poirier out of there quicker than khabib did. Conor got gaethje out there, just as fast as Khabib did (or faster), people will say Conor is the defacto LW champion or start shitting on khabibs legacy and say he was never really that good. They will pitch that conor's focused and could beat khabib this time.
Now, seeing that Khabib may get pissed off and want to remind the world again like hey, I already beat this guy. I will smesh him worse the second time. Believe me.
That's the only scenario I can see when he comes back. I think the khabib you got towards the fight in the interviews is the one that's real. I think he stays retired, but I think it depends how the LW picture looks in a year or so. If it doesn't look interesting, I don't think he's coming back.
Conor for all we know might poirier, might fight gaethje than fuck off and go box an old pac or someone different.