Slaven Bilic is under increasing pressure to make changes to his coaching staff and his training regime if he wants to save his job as West Ham manager.
Bilic has one year remaining on his contract and accepts there is unlikely to be a new deal on the table this summer after a disappointing campaign.
West Ham, winless in five, have won only once at home since Christmas and co-chairmen David Sullivan and David Gold remain unconvinced about the suitability of the 48-year-old Croatian to lead the club into the long-term future.
Roberto Mancini has an eye on the job and West Ham's board are impressed by the work of David Wagner at Huddersfield, who are pushing for promotion to the Premier League.