When you make millions a year, is there really a difference of quality of life between $4 million and $8.5 million per year? That is insane money that most coaches would jump at but if you already love what you do where you are at and have the quality of life you want/need, what is the point going to the Lions when they will just fire you before the end of your contract? Not to mention you are on track to have your statue outside of JTS someday.
Depends if you want a nice yacht or not.