West Ham United take on London rivals Chelsea at the London Stadium on Sunday, with the Hammers sweating over the fitness of key man Marko Arnautovic.

The Austria international has become a critical figure in the Irons side but picked up a knock in the 3-1 win over Everton last weekend.

With West Ham hoping to make it two consecutive wins when Chelsea arrive this afternoon, manager Manuel Pellegrini has admitted he is hopeful that Arnautovic will be fit to play a role.

“Marko finished with a problem behind his knee against Everton – he’s having some treatment and we will see if he can be fit for Sunday,” the Hammers boss told the official website.

“I think Marko played very well against Everton and we hope he will have recovered for the next game.”

West Ham are without long-term absentees Manuel Lanzini, Winston Reid and Andy Carroll – and there is no better news on Javier Hernandez or Jack Wilshere either.

“Lanzini, Reid and Carroll are long-term. Javier Hernandez is still sick with a virus and Jack Wilshere has the problem with his ankle,” Pellegrini continued.

“The doctor can say more than me about what has happened with Jack. We will see how many weeks it takes him to recover.”

There are signs that Pellegrini’s methods are starting to hit home for the West Ham players and another victory would be a sizeable confidence booster for everyone at the club.

However, Chelsea have been in blistering form this term so far and the Hammers will need to be at their best to avoid slumping to another loss.

Given that West Ham are at home, the fans will hope that the hosts will take the game to their London rivals and come out with a positive result.