West Ham United manager David Moyes admits he is worried about the injury sustained by captain Mark Noble.
The 33-year-old has been in the side for the past two games as Declan Rice is absent with a knee problem.
Now Noble could be out after he suffered a blow to his elbow during a 3-2 win over Leicester City on Sunday.
Moyes told reporters about Noble: "Bad kick on his elbow so his elbow is bad and we need to see how he is.
"I said at the start of the season he would have a big part to play and he has a huge part to play.
"We can't hide the fact we miss Declan and Mick [Michail Antonio] but Noble has come in and done a great job."