West Ham forward Marko Arnautovic has vowed to 'come back strong and quick' as he looks set to be 'out for a while' with a suspected hamstring problem.
The Austria striker, who has scored five goals for the Irons this season, was forced off during the first half of Tuesday night's 3-1 Premier League win over Cardiff.
Arnautovic posted pictures of his leg in a straight knee sleeve and said on his Instagram story: "Lets Go I will do everything to be back for my team @westham
"Thank you so much for all your messages. I will be out for a while but will do everything to come back strong and quick".
West Ham have yet to confirm the full extent of Arnautovic's injury, but wished the forward a speedy recovery in a post on the club Twitter account, which said: "Get well soon, Arnie".
Irons boss Manuel Pellegrini is set to hold a pre-match press conference on Thursday ahead of the weekend fixture against Crystal Palace, when more is expected to be revealed on Arnautovic's expected lay-off.
Depending on the extent of the problem, Arnautovic could struggle to feature over the festive schedule.
West Ham have a home match against Watford on December 22, then are away at Southampton on December 27 before a trip to Burnley and hosting Brighton on January 2 with an FA Cup third-round date versus Birmingham set for three days later.
The Hammers recovered from the loss of Arnautovic to make it back-to-back Premier League wins for the first time in almost two years by beating Cardiff.
Two goals from substitute Lucas Perez - his first in the top flight for precisely 700 days - and Michail Antonio's first league goal of the campaign lifted West Ham towards mid-table.
The Irons prospects suddenly look a lot brighter than after the first four matches of the season, all of which were defeats to leave Pellegrini's men playing catch-up.
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