Wally Downes has left his position as West Ham first-team coach, Press Association Sport understands.
Downes joined the Hammers as a defensive coach under Avram Grant in November 2010 and was then promoted by the Israeli's successor Sam Allardyce in the summer of 2011.
The 51-year-old helped Allardyce achieve promotion to the Barclays Premier League at the first time of asking, but it is understood that he left the club on Tuesday.
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