West Ham are expected to step up their efforts to sign Rennes left-back Adrien Truffert and Monaco midfielder Youssouf Fofana over the coming days.
There has been growing frustration among fans over the lack of signings and hints at tension regarding the profile of players preferred by director of football Tim Steidten compared to those favoured by manager David Moyes.
Bids, considered to be under value, have gone in for Manchester United's Harry Maguire and Southampton's James Ward-Prowse. Talks have also been held over £45m-rated Scott McTominay, Edson Alvarez at Ajax, Bristol City's Alex Scott and Ian Maatsen of Chelsea.