Pellegrini expects Arnautovic to miss a month

West Ham is set to be without Marko Arnautovic for up to a month after he sustained a muscle injury against Cardiff City on Tuesday.

West Ham's Marko Arnautovic appeared to have pulled his hamstring during the Premier League clash against Cardiff City on Tuesday.

Marko Arnautovic looks destined to miss a month of action with a muscle injury, according to West Ham boss Manuel Pellegrini.

The Austria forward limped off towards the end of the first half of the Hammers' 3-1 Premier League victory over Cardiff City on Tuesday, his replacement Lucas Perez scoring twice.

Arnautovic appeared to pull his hamstring and on Wednesday posted on

Instagram to say he would be out for "a while".

Pellegrini was able to place a more definitive timeframe on his comeback, however, confirming the expected absence on Thursday ahead of West Ham's home clash with Crystal Palace at the weekend.

The Hammers are set for a favourable looking fixture list over the Christmas period, with games against Fulham, Watford, Southampton, Burnley and Brighton and Hove Albion to come after Saturday's London derby with the Eagles.