FTR, I don't think Gundy leaves OSU for Arkansas. I think he might listen to a phone call but that's pretty much it.
However, Arkansas does have nicer facilities and more available funds than OSU. If you believe otherwise than you don't know all the available information.
Money and facilities aren't Arkansas' problem. Desolate in-state recruiting, being in the same division as a few of the nation's top programs, and an absolutely bat shite fanbase will be the biggest detractors for possible coaching candidates.