I dont think Fisher, Holgorsen, or Aranda are in any danger this season.
Aggy will swallow a lot of things but I dont think $100mil+ (fire FIsher & hire new staff) is one of them.
Next season with a weaker B12 and no improvement for Holgorsen or Aranda, then maybe.
Riley should be on the list.
USC starting the season #6 and now #22 and falling with #5 UW, #8 UO and rival #23 UCLA still left to play is unsettling for the fanbase and most have already turned on Riley. The idea of going into the B10 next year without Caleb and a decent defense is annoying to most of the fans.