With Alex Grinch getting canned at USC, it opens up a DC position at a high profile school. They've got money and are headed to the B1G, so it'll be a reasonably desired job.
Lincoln Riley needs a strong, "splash" DC hire because USC is not living up to the hype, especially with their defense. I'll bet he's calling some "there's no way they'd leave...." coordinators and might land one.
For us, Grinch isn't someone we'd want, IMO, but as things start to shuffle to fill the USC job and if Heupel is looking to upgrade/make a change, a lot of resumes are probably getting polished up.