Dana talked about this at the post-fight press conference.
NSAC is withholding Khabib's show purse ($2 million). NSAC doesn't have jurisdiction over the PPV bonuses, but Dana said that won't be available for months or a long time.
Khabib is rich AF and his normal show purse has been like $20k. Dude hasn't gotten paid in the past and the money means nothing to him. If he's demanding A-side money it's just a way to flex over Conor in the mental warfare game. Khabib will have some big edges in mental warfare in a rematch, but he's also going to be traveling with his B team because his normal entourage is banned.
––
Tony vs Conor I imagine will at least be an interim belt. Allows Dana to sell the fight, hype it's for the belt, and kicks the can on Khabib (stripping him, banning from UFC, watching him "retire," whatever). Can always elevate the winner to undisputed afterwards and interim champs still get PPV buys so no one will really object. I think Tony poses as big a stylistic problem for Conor as Khabib does. Conor doesn't have any easy fights to make (even if he goes back down to 145, he's fighting Max who fights a lot like Tony and will give Conor fits or he's fighting T-City who like Khabib will wrangle Conor on the ground). He's lost 3 of his last 4 fights, and the only win was a controversial decision vs Nate fucking Diaz. Conor's star power is at serious risk, but the Khabib shenanigans give him a mulligan in public perception because no one's going to remember it.
––
I'd rather see Stipe rematch DC than Black Beast, but DC knows which of those two fights carries more risk and he wants to ride his career out on top as the champ ($) and with those sweet PPV buys ($$$) especially for that stupid Lesnar fight. Whatever DC, you're the man, you deserve it, but Stipe is getting the red-headed stepchild treatment.