This whole Calapari move is surprising to me.
BUT, he may be tired of the crap he gets from Kentucky fans and as always MONEY talks.
Per what I am seeing, the base pay he will receive at Arkansas is actually slightly less than base pay at Kentucky (though there are likely other incentives not released yet).
A quick search shows the buyout at Kentucky (if Kentucky were to fire him):
After 2024 season: $33.375 million
After 2025 season: $27 million
After 2026 season: $20.25 million
After 2027 season: $13.5 million
After 2028 season: $6.75 million
In short, I do not think the move has much to do with money he would get paid at Arkansas vs Kentucky. I think it is moreso the feeling that he is not wanted and that his life would be made miserable for the next couple of seasons at Kentucky. If the pay is similar, then the amount of stress is drastically reduced at Arkansas compared to Kentucky, and Arkansas has top tier assets available (especially compared to other SEC schools). I think the move is more lateral than many people think. Arkansas is easily a top 3 or 4 SEC program.