I would imagine a new topic will get spun off this but this is as good of a place to start as any.
I imagine early candidates will be Will Bolt, Justin Seely for obvious reasons. A&M fans are really down on Bolt and seem to be fed up with Childress too.
I think Rick Heller is a damn fine coach but I'm not sure he'd leave Iowa for Nebraska for optics reasons. Brink truck/dream hire would be Childress, he's making $350k at A&M.
Other interesting names...
Jim Penders UConn
Andrew Checketts--UC Santa Barbara Coach
Eric Newman--UC San Diego Coach
I also really like Steve Holm but he just took the Illinois State job last year so I imagine there is zero chance he leaves.