West Ham will need to assess left-back Emerson, who was withdrawn because of an injury in the defeat by Freiburg.
Nayef Aguerd is also doubtful after missing Thursday's game with an unspecified issue and Maxwel Cornet remains out with a hamstring problem.
Burnley midfielder Josh Brownhill returns following a one-game ban.
Aaron Ramsey, Nathan Redmond, Lyle Foster and Luca Koleosho are long-term absentees, while Jordan Beyer is not yet back in contention.