According to this article the top 3 choices in order are John Gruden, Willie Simmons, and Scott Frost in that order.
https://athlonsports.com/college-football/scott-frost-reportedly-emerges-for-notable-college-football-opening
It appears you are using ad blocking tools. This site is supported through ads. Please disable in order to enjoy full access to The Bulls Pen. Registration is free and reduces ads.