UPDATE: It would seem that the parting of way was not mutual as ESPN's Adam Schefter is now reporting.
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Chiefs and John Dorsey did not agree to part ways, per source. Chiefs dismissed John Dorsey, per source. Their decision.
— Adam Schefter (@AdamSchefter) June 22, 2017
The Kansas City Chiefs are moving on without general manager John Dorsey:
A shocker: The #Chiefs and GM John Dorsey have agreed to part ways.
— Ian Rapoport (@RapSheet) June 22, 2017
The move comes just months after the Chiefs traded No. 27 overall, a third-round pick and their 2018 first-round pick to swap with the Buffalo Bills and snag quarterback of the future Patrick Mahomes at No. 10 overall.
In a statement Chiefs owner says reached out to Dorsey to inform him contract wouldn't be extended beyond '17 season. Opted to change now
— Jason La Canfora (@JasonLaCanfora) June 22, 2017
Dorsey is a former fourth-round pick from the Green Bay Packers and began his executive career with them in 1991. Over his career he's had two stints with the Packers, as well as positions with the Seattle Seahawks and Kansas City Chiefs.
He leaves Kansas City after taking the general manager job in 2013.