West Ham boss Slaven Bilic has said Diafra Sakho's latest injury is a ‘big blow’ for the club, as the Hammers await the results of a scan on his hamstring problem.
Sakho became the first West Ham frontman to score this season when he found the net in Sunday's 1-1 Premier League draw at Manchester United.
It was only the Senegal international's second appearance of the season following a long spell on the sidelines, but he could now face another four weeks on the out with a hamstring injury.
With Andy Carroll and Andre Ayew having missed the majority of the campaign and summer signings Simone Zaza, Jonathan Calleri and Ashley Fletcher all misfiring in front of goal, manager Slaven Bilic has another headache ahead of Wednesday's return to Old Trafford in the EFL Cup.