They already blew the home run hire IMO. They had Urban Meyer interested last year and their new University President said no to their AD pursing him.
I realize there are still some good coaches out there to go after and one of them might end up being the next Pete Carroll at USC. But any of these “short-list candidates” might very well fail like Sark or Kiffen etc. Urban was the only sure hire I can see that would’ve returned USC to national title contender, going to the CFP YoY.