Arsenal without Mustafi and Ramsey for trip to West Ham
Arsenal will be without Shkodran Mustafi and Aaron Ramsey for Wednesday's Premier League trip to West Ham.
Mustafi missed Sunday's 1-1 draw at Southampton due to a thigh problem and is still absent this time out.
Ramsey (hamstring) joins him on the sidelines with fellow midfielder Santi Cazorla (ankle) a long-term injury absentee.
Provisional squad: Cech, Ospina, Mertesacker, Holding, Koscielny, Chambers, Monreal, Debuchy, Bellerin, Nelson, Kolasinac, Maitland-Niles, Wilshere, Xhaka, Elneny, Ozil, Iwobi, Walcott, Sanchez, Welbeck, Giroud.