The Jacksonville Jaguars did not release any coaches from their staff at the end of the 2013 season, but that does not mean there weren’t a few of them in demand.

The Jaguars have announced that the team’s linebackers’ coach, Mark Duffner is leaving Jacksonville for a job down south with the Miami Dolphins.

Duffner was a holdover from the Jack Del Rio staff and was instrumental in the line backing unit that featured solid play from Paul Posluszny and Geno Hayes this season.

Duffner, 60, has been the Jacksonville Jaguars linebackers coach under three head coaches — Jack Del Rio, Mike Mularkey and Gus Bradley. He has been with the Jaguars since 2006 and worked for the Green Bay Packers in the mid-2000’s when Dolphins head coach Joe Philbin was on that same staff.

Duffner has 17 seasons of NFL experience, making him the Dolphins coach with the most NFL experience. He is formerly the head coach at the University of Maryland (1992-96). Prior to that he was head coach at Holy Cross.

It was also announced on that head athletic trainer Mike Ryan is leaving the NFL to pursue other interests.

“I’ve got two little ones at home and a very supportive wife, and the rigors of the NFL, though it’s a great job and I love it, I think it’s time to focus on the family and I’m real excited about that,” Ryan said on Monday. He was with the Jaguars since 1984 and has remained on as a staff member since.

Because the Jaguars staff is in the middle of preparing for the Senior Bowl in Mobile. Alabama, the team’s defensive coordinator Bob Babich will coach the linebackers for the South team.

Duffner comes to the Dolphins after linebackers coach George Edwards left the team last week to join the Minnesota Vikings.

No word yet on who will replace either staff member in Jacksonville.