West Ham striker Niklas Füllkrug, who recently recovered from an Achilles injury, has suffered another setback.
According to the club's official website, the 31-year-old forward sustained a hamstring injury during Friday's third round FA Cup match against Aston Villa. It is expected that the German will be out for up to three months.
This season, Füllkrug has played 11 matches for West Ham, scoring two goals and providing one assist.