West Ham are set to appoint former Nottingham Forest boss Nuno Espirito Santo as their new head coach after sacking Graham Potter.
Nuno is expected to be in place before Monday's Premier League match against Everton, having said he has had positive talks with the West Ham board.
Potter was dismissed on Saturday morning after just eight months in charge, with the club 19th place in the table.
The Hammers took only three points from their opening five Premier League games this season under the Englishman.
The east London club said they believed "a change is necessary in order to help improve the team's position in the Premier League as soon as possible".