West Ham have parted company with manager David Moyes after just six months in charge of the club and claim they will make a new appointment "within the next ten days".
The 55-year-old Scot was on a short-term contract until the end of the season, but according to the London Evening Standard he decided he did not want to renew it having grown disillusioned with his treatment by the club, including reports that joint-chairman David Sullivan had earlier this week interviewed Shakhtar Donetsk coach Paulo Fonesca.
The former Preston, Everton, Manchester United, Real Sociedad and Sunderland boss replaced Slaven Bilic in November with the London Stadium club in the relegation zone and guided them to 13th in the Premier League table.
Hammers picked up seven points from their last nine to steer clear of trouble, with his final game in charge being a 3-1 home win against Everton, who sacked their boss Sam Allardyce earler on Wednesday.
Moyes' assistants Alan Irvine, Stuart Pearce and Billy McKinlay will also leave with immediate effect.
Sullivan said in a statement posted on the club's website: "Throughout his time here, David has carried himself with dignity and honesty and we have all found him to be a pleasure to work with.