West Ham ahead Michael Antonio may be out until the New Year.
The 29-year-old underwent successful surgery on his leg on Tuesday and is expected to be out for a few months while he recovers.
Last week, he suffered the problem at Newport throughout the 2-0 Carabao Cup success.
The Hammers, who lost last 16, Javier Hernandez if he had been offered to Sevilla , still have plenty of options.
Whereas boss Manuel Pellegrini also has Andriy Yarmolenko, Felipe Anderson, Robert Snodgrass and Manuel Lanzini Albian Ajeti and new signings Sebastian Haller compete for its position.
And Pellegrini has now drafted in U23 participant Xande Silva into his 25-man Premier League squad if needed this season, and he could play.
Antonio, who’s under contract in the West London club played in West Ham’s first three matches of the season but missed the 2-0 triumph over Norwich in the weekend.