Cal will be here until a better option is available and interested.
Here's what the issue is, everyone involved is so gun shy after Billy Gillespie that nobody wants to risk that again.
If a top tier coach wanted the gig and let it be known through proper channels, it'd have happened.
The money keeps rolling in for the program so you can holler about MB all you want, but the folks and business partners with the real cheese like him and keep paying up. They apparently like Cal too.
MB won't be fired he's done way more good than not good. He's made way too much money for the program and has run a pretty clean ship free of major disaster and scandal compared to a lot of places. He's about as untouchable as anyone in the state of Kentucky. His reputation across collegiate athletics is stellar. Folks don't realize or want to realize it, but he's well regarded. Lot of programs are fairly competitive and successful across the board, and he's the only AD to have halfway figured out football.