The move came six weeks after Johnson fired coach Robert Saleh after a 2-3 start, setting the stage for an offseason reboot that likely will affect quarterback Aaron Rodgers.
Phil Savage, a senior football adviser for the Jets, was named the team's interim general manager. Savage is a former GM of the Cleveland Browns (2005-08).
"Today, I informed Joe Douglas he will no longer serve as the General Manager of the New York Jets. I want to thank Joe for his commitment to the Jets over the last six years and wish him and his family the best moving forward," Johnson said in a statement.
Johnson added that the Jets "will begin the process to identify a new General Manager immediately." He wasn't made available to reporters.
The Jets, who began the season with Super Bowl aspirations, dropped to 3-8 after blowing a late lead Sunday against the Indianapolis Colts.
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