First off, we're not luring another coach at a big time BCS program (Stoops, Sumlin, Strong, Malzahn, etc). However, if Foley hires another assistant I think he should be lynched!
There are a lot of candidates out there, up-and-comers. The obvious candidate is McNeil. But how many other schools will come after him?
There are a few out there under the radar and several on the radar.
One of the under the radar guys I like is Old Dominion head coach Bobby Wilder:
https://en.wikipedia.org/wiki/Bobby_Wilder
https://www.odusports.com/ViewArticle.dbml?ATCLID=208409198
The guy started the program from scratch and hasn't had a losing season. He's only 50 years old and has a great track record (and is also an offensive guy).