Packers gave coach Mike McCarthy 1-year extension during the season

McCarthy under pressure despite contract extension? (0:57)

Mike McCarthy's contract extension through 2019 will help him sign a new defensive coordinator after letting Dom Capers go earlier this week. (0:57)

GREEN BAY, Wis. -- In an offseason of significant changes, the Packers should have stability at the head-coaching position.

Coach Mike McCarthy received a one-year contract extension during this past season, sources told ESPN.

The deal keeps McCarthy under contract through the 2019 season. McCarthy would have been entering the final year of his contract in 2018 without an extension.

This will help McCarthy attract defensive coordinator candidates who otherwise might have been reluctant to join a lame-duck head coach. McCarthy is looking for a new defensive coordinator after he fired Dom Capers on Monday. At least two other defensive assistants, inside linebackers coach Scott McCurley and defensive line Mike Trgovac, also were let go.

There also could be some shake-up on the offensive staff, a source said. The Packers already know they will need a new receivers coach. Luke Getsy left to become the offensive coordinator at Mississippi State, and there could be a significant restructuring of responsibilities on that side of the ball, including a possible change at offensive coordinator, the source said. Edgar Bennett has been the coordinator since 2015. Bennett is a former receivers coach, and there's some consideration to moving him back into that role.

The Packers want to keep McCarthy as coach even though they are seeking a new general manager. Ted Thompson won't return for a 14th season as GM, despite signing a one-year extension of his own after the 2016 season that, like McCarthy's deal, also was never announced. Thompson, 64, will move into a new role as senior adviser to football operations, the team announced Tuesday.

Packers president Mark Murphy will conduct a search to find Thompson's replacement, and there are multiple candidates with ties to McCarthy -- including all the internal possibilities (Russ Ball, Brian Gutekunst, Eliot Wolf and Alonzo Highsmith) plus outside candidates such as Seahawks GM John Schneider and Raiders GM Reggie McKenzie.

Although Murphy said the new GM will have authority over the coach, he added that McCarthy will be the coach going forward.

"Mike is our man; he is our coach," Murphy said. "We have obviously, kind of like Ted, the two of them together have had a great run. We have all the confidence in the world in Mike, we're going to have great success moving forward. So yeah he will be our coach."

It's possible the Packers could extend McCarthy again or start over with a new deal once a general manager is hired. Thompson and McCarthy almost always had contracts that ran concurrently.

McCarthy is 131-78-1 (including 10-8 in the postseason) with one Super Bowl in his 12 NFL seasons.