USC has to prepare for the fact that Urban Meyer is likely not a candidate for the job. Their president has declared this a non-starter. This was BEFORE USC went out and hired an outsider for their vacant AD position, something they haven't done in quite some time. It was a significant move and a seachange for a school that has previously hired former star athletes - with little to no AD experience - to do a tough job they weren't qualified for which led to some embarrassing failures.
The hiring of former Cincinnati AD Mike Bohn is significant and I think he'll bring in a coach that has no ties to USC. And if Meyer isn't an option, who does he tap to replace Helton, once he fires him? James Franklin isn't going to entertain any offers right now, so Bohn has to start working on his shortlist. Why wouldn't that include Luke Fickell? He's done a good job at Cincinnati, has experience running a big time program (albeit on an interim basis with mediocre results, which weren't really his fault) and he's a younger guy who has energy, unlike the milquetoast blob they have there now. Last time they hired an outsider it worked out pretty well for them.