West Ham striker Diafra Sakho has undergone a scan and will see a specialist to learn the extent of his thigh injury.
Sakho suffered what the club have described as "a significant injury to his left thigh" during the second half of Sunday's 1-1 Premier League draw with West Brom.
"Diafra unfortunately suffered a significant injury to his left thigh during Sunday's Premier League draw with West Bromwich Albion," said West Ham's head of medical and sports science Stijn Vandenbroucke on the club's official website.
"He underwent a scan on Wednesday and will see a specialist on Thursday, when we hope to learn more and put a more certain timeframe on his absence."
Vandenbroucke added more positive news on the recovery of Sakho's fellow forward Enner Valencia from an ankle injury.
