Julen Lopetegui has agreed a deal to become West Ham manager at the end of the season.
Nothing has been signed yet but the 57-year-old is close to making a return to management following his departure from Wolves in August last year.
Current Hammers boss David Moyes has come under increasing pressure after a poor run of results that has seen his side win one win of their past nine Premier League games and exit the Europa League in the quarter-finals.
West Ham were thrashed 5-0 by Chelsea on Sunday to leave them ninth in the table.