On compensation for a new coach (and for the moment setting COVID financial restrictions aside), bringing in a head coach from a Group of 5 school would likely slot pay at $2.25 million a year. A good recent comparison might be Indiana, who gave the reins to Tom Allen at the start of 2018, paying him $1.8 million a year. After 2 years (and a notable bowl game), they re-did his contract and he's now at $3.9 million or so a year.