I wasn't aware he became an NFL OC or even had solid job offers. That opinion's not off until and unless that happens.
KK didn't show anything in the nfl and college to garner interest from other franchises
The only thing he showed should just scary off GMs and ownerships , all his teams constantly regressed in the second half of the season, that speaks volume about his inability of leading a professional football team
At best he can be evaluated as positional coach especially if he has some friends in the nfl
I think the news has been spread by his shrewd agent