West Ham United have confirmed that summer signing Andre Ayew will not undergo surgery after suffering a thigh injury while making his debut.

The 26-year-old, who became the Hammers' club-record signing after joining from Swansea City for £20.5m, is expected to be out of action for around three months.

Ayew was forced off the pitch during West Ham's 2-1 defeat to Chelsea in their opening Premier League match of the season.

West Ham head of medical and sports science Stijn Vandenbroucke told the club's official website: "Andre Ayew suffered a rare but very serious thigh injury at Chelsea, which will take time to recover from. Andre will not have surgery and we have started the rehab straight away, working two times a day.

"Andre is a highly professional athlete with a positive attitude that no doubt will affect the return to play date. It is early to put a timeline on the rehab, but we are positive to reintroduce him in December."

Meanwhile, manager Slaven Bilic has confirmed that the club are interested in signing Manchester City outcast Wilfried Bony.