On Monday, Albert Breer of The MMQB pointed to the "well-documented" friction between the two, noting: "As I understand it, it'd had gotten to the point where Rodgers—who has autonomy to adjust as he sees fit—was regularly changing plays, which would make it difficult for McCarthy to find his rhythm as a play-caller."
One coach told Breer the situation often developed into something of a competition to see which one had the better play call.
That reported play-calling competition has resulted in an inconsistent offense this season.
Green Bay is a middling 16th in the league in points per game and scored fewer than 20 points in three of its last five contests. Rodgers is completing 61.8 percent of his passes, which would be his second-lowest mark since he became the full-time starter in 2008.
There also seemed to be a disconnect between what Rodgers wanted and what was happening when he publicly called for more opportunities for wide receiver Davante Adams and running back Aaron Jones earlier in the season.
Despite the play-calling issues and a 4-7-1 record this season, McCarthy leaves the Packers with a 125-77-2 record and one Super Bowl title in 13 years. The team missed the playoffs last year for the first time since 2008 and appears well on the way to missing out again this season. The Packers are well behind the 8-4 Chicago Bears and 6-5-1 Minnesota Vikings in the NFC North.
Many inside the Packers organization reportedly still believe McCarthy can be an effective coach, according to Breer, but they felt it was time to head in a different direction during a second straight disappointing season.
Rodgers is 35 years old, which increases Green Bay's sense of urgency. There are only so many more seasons in which he can be expected to perform as one of the best quarterbacks in league history.
Rodgers will no longer have to worry about altering McCarthy's play calls as he and the rest of the team look ahead to a potential turnaround effort in 2019.