This is Paul Kuharsky's article on his AFC South Blog...

Jacksonville Jaguars owner Wayne Weaver and coach Jack Del Rio will shake things up on the field, in the front office and with the coaching staff after a disappointing season, sources told ESPN senior NFL analyst Chris Mortensen.

The first change involves defensive coordinator Gregg Williams not returning to Jacksonville. A one-year marriage to Williams is headed for divorce, sources told ESPN.

Philosophically, it hasn't worked, and it wasn't an expensive hire because Williams had one year left at more than $2 million when he was let go by the Washington Redskins.

Williams could reunite with Jeff Fisher in Tennessee if Titans defensive coordinator Jim Schwartz lands a head-coaching job in the offseason.