West Ham made a record-equalling bid of £25million for Stoke City midfielder Joe Allen in the January transfer window.
Co-owner David Sullivan confirmed the move for the former Liverpool man, which was turned down by Stoke.
The season-ending injury to Pedro Obiang has left David Moyes short of midfield cover and the Hammers also made unsuccessful moves for Ibrahim Amadou and Leander Dendoncker.
Sullivan did bring in £8million striker Jordan Hugill from Preston and Inter Milan midfielder Joao Mario for a £1million loan fee, but after receiving £24million from the sales of Diafra Sakho and Andre Ayew, Hammers fans have been left disgruntled.
Calls of ‘sack the board’ were heard during Saturday’s 3-1 defeat at Brighton, but Sullivan has remained defiant and told TalkSPORT the fans’ criticism will not change things at the London Stadium.
“Chants of sack the board and opposition to me and David Gold will mean nothing. Get behind the team, though unity we can turn it all around. We don’t want to find that a disappointing season has turned into a disastrous one,” said Sullivan.