Ryan ten Doeschate will captain Essex in all formats after Ravi Bopara decides to stand down as limited-overs skipper.
Essex chief executive Derek Bowden says Mohammad Amir must be allowed to get on with his career.
Essex sign Pakistan fast bowler Mohammad Amir as an overseas player for the 2017 season.
Essex chairman John Faragher is concerned a city-based T20 competition could lead to an eight-team Championship.
Audio & Video
A bizarre run out and a superb spell of bowling from Samit Patel send Nottinghamshire to T20 Blast Finals Day as they beat Essex in the last eight.
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