The Green Bay Packers appear poised to add Oklahoma University assistant Jerry Montgomery to their coaching staff, according to Jason Kersey of The Oklahoman:

Multiple sources confirming that Jerry Montgomery is leaving #Sooners for the Green Bay Packers.

— Jason Kersey (@jasonkersey) February 10, 2015

Montgomery was Oklahoma's co-defensive coordinator and defensive line coach. He had only recently been promoted to co-defensive coordinator in January, so he has no game experience in that role. He was Oklahoma's defensive line coach for two seasons in 2013 and 2014.

Oklahoma head coach Bob Stoops confirmed Montgomery was leaving the Sooners program in a statement released online.

“This is a rare opportunity for Jerry and his family to join one of the finest organizations in the National Football League,” Stoops said. “I appreciate the positive impact that Jerry has made with our defensive line the past two seasons, as well as his many other contributions to Oklahoma Football. The NFL is getting a fine man and a very talented football coach. I support Jerry’s decision to further his career goals working with one of the most stable and successful franchises in pro football.

“The University of Oklahoma continues to be an attractive destination for some of the nation’s elite coaches and players,” Stoops continued. “I have already begun the search process to bring another talented defensive line coach into our program. On behalf of our entire staff, we wish Jerry, Natalie and their family the very best.”

Prior to Oklahoma, Montgomery was also defensive line coach at previous stops at Michigan, Wyoming and Northern Iowa.

There would appear to be a shakeup on the Packers defensive coaching staff that has yet to learned, one of many in Green Bay.

On Sunday, reports surfaced that head coach Mike McCarthy would relinquish play-calling duties to offensive coordinator Tom Clements, who would become associate head coach. Edgar Bennett, meanwhile, would be promoted to offensive coordinator.

The Packers had previously fired special teams coordinator Shawn Slocum while Ron Zook will reportedly be promoted to take over the vacated position.

Currently, Mike Trgovac is defensive line coach in Green Bay, so it's unsure what position Montgomery will hold or whether there's a change in store for Trgovac.

UPDATE: 

Source tells @NFLonFOX position @OU_Football coach Jerry Montgomery has taken w/ @Packers is essentially defensive quality control @NFLonFOX

— Alex Marvez (@alexmarvez) February 11, 2015