I don't think Texas would hire John Calipari, and I actually don't think Cal would want to go to Texas, now that it's headed to the SEC.
None of the bluebloods will be looking for a coach soon. And even if they were, I don't know that any of them would want Cal.
I can't really see any of the current hot seat possibilities being potential landing spots. Georgetown likely can't afford him, and neither can St. John's. Georgia Tech would be firing his former assistant, so it's unlikely they'd be interested. At one time Pitt might have had an outside shot (hometown school and all), but Capel has seemingly turned things around there
That doesn't leave many possibilities for a place that can...
-Afford him
-Be enough of a stroke to his ego
-Allow him to recruit elite players
-Give him the NIL/facilities support he'd be looking for
-Put him in a position to win without awkard fallout (in other words, not the SEC, and not the AAC)
I think his next move is either one that comes out of left field, or one that is the residual effect of a first domino to fall. I could see it being a place like USC, for example. Andy Enfield is winning out there, but just a few years ago was on the hot seat. Does he head back east for a landing spot of his own before his seat warms up again? If so, I could see USC being the type of place that could give Cal a fresh start. They have the $$$, the name, the location, etc. And they'd be looking for some juice to counter the success that Cronin has had up the road.
A longer shot, but what if Mike Brey hangs it up at Notre Dame? There's been talk that he has considered stepping away for the past few years. He and Cal are the same age, but maybe a place like Notre Dame would appeal to Cal. Prestige, former basketball success, a place where people care, fertile recruiting territory (though he would have to navigate tougher academic waters), etc. And the place has money. I could see it piquing his interest.
Unfortunately, it's just not as simple as Cal-to-Texas. I wish it were. But I do think (hope) some other dominoes may fall this offseason that might open up some possibilities that nobody is talking about yet.