Former England Test captain Alastair Cook is available for Essex's three opening County Championship games of the season.
Lancashire coach Glen Chapple says his squad is well balanced for the County Championship following winter signings.
Australia all-rounder James Faulkner is refused permission to play for Lancashire by his country because of a knee injury.
Pakistan pace bowler Junaid Khan will rejoin Lancashire Lightning for their T20 Blast matches in the 2017 season.
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After his successful England debut in the first Test against India, BBC Sport asks whether Haseeb Hameed can provide captain Alastair Cook with a reliable opening partner.
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How to get into cricket - physical exertion with a chess-like element in matches which range from half an hour to five days.