The jets or some other team were interested in Kool this year. If he wanted to jump to the NFL he would have. That is when he got associate head coach title. He seems like a college guy. Moving on the be a dc is the more likely scenario.
I see nothing about this guy that says he wants to be anything other than a DL coach.. Not everyone wants to call plays and be involved in that part of the game-planning or overall recruiting picture the way DCs need to be.. Seems like Kool found his coaching niche and is very secure with being really good at what he does, and his tenure at Mizzou suggests he values stability. He now has about as much autonomy and salary as an assistant coach can have without the additional responsibility of a coordinator title.
Kool wants to live in paradise, feel appreciated, mold young men, and be well paid to do what he loves to do..Sounds like he's got everything he wants and will not be leaving Miami anytime soon..