West Ham record signing Andre Ayew has resumed full training following two months out with a quadriceps injury.
Ayew, who joined the Hammers from Swansea in August for a club record fee of £20.5m, sustained the problem on his debut for the club in the opening day loss to Chelsea at Stamford Bridge.
The Ghana forward did not require surgery on the injury and was allowed to return to former club Marseille to receive specialist treatment.
"Andre Ayew has returned to full training from the quadriceps injury he suffered at Chelsea in August," West Ham's head of medical and sports science Stijn Vandenbroucke told the club website.
"Andre has worked hard on his rehabilitation and joined the group on Monday.
"His fitness levels improve with every day that passes and we are all looking forward to seeing him back in action soon."
West Ham have struggled in Ayew's absence and currently sit in 15th place in the Premier League, having won only two of their opening eight matches.
Vandenbroucke confirmed long-term absentee Diafra Sakho will begin training with the club's Under-23 side on Monday before re-joining the first-team squad the following week.
He also revealed Andy Carroll's recovery from a knee injury sustained in August was "taking longer than our initial prognosis" of four to six weeks, but stressed the forward was making "steady progress".