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West Ham winger Michail Antonio has yet to resume training after a groin problem, while Mark Noble is a doubt with of a hamstring injury.
West Brom forward Salomon Rondon is struggling with a hamstring complaint.
West Ham manager David Moyes said: "The most important thing for us is to focus on how we can get ourselves away from the bottom.
"I don't like harping back to it but I think we might have been 13th if that decision had gone for us [at Bournemouth] on Boxing Day.
"It would have made us feel a lot better and our league position look a lot better.
"So all we can do is focus on ourselves and keep our home form as good as we can as well. We need to win our home games."
West Brom boss Alan Pardew explained: "We've got to do something in the [transfer] window.
"When you look at teams with seven wins in a calendar year it's telling you something.
"As much as we've changed the intent and tried to change the psychology, a change of character in the dressing room might help everybody so I'll be pushing to hopefully get somebody in."
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