Arsenal will assess several players after their energy-sapping FA Cup semi-final penalty shoot-out win over Wigan ahead of Tuesday's match with West Ham.
Midfielder Tomas Rosicky (thigh) and centre-half Laurent Koscielny (calf) could return after missing Wembley, but Alex Oxlade-Chamberlain (groin), Tomas Rosicky (thigh) and full-back Nacho Monreal (dead leg) are doubts, and forward Lukas Podolski, who suffered a dislocated finger, has also reported muscle tightness in his leg.
Midfielder Mathieu Flamini serves out his two-match suspension while regular number one Wojciech Szczesny is set to come back in for Lukasz Fabianski, who saved two penalties in the shoot-out. Midfielder Serge Gnabry (knee), Germany international Mesut Ozil (hamstring), England midfielder Jack Wilshere (foot) are all still recovering, as are Abou Diaby and Theo Walcott (both knee).
Skipper Kevin Nolan is a doubt for Hammers.
The midfielder picked up a hamstring problem during the recent 2-1 defeat by Liverpool and will be handed a late fitness test.
Joey O'Brien is back in training after a dislocated shoulder but fellow defender George McCartney (hamstring) and striker Marco Borriello (calf) will miss out again.
Arsenal squad: Szczesny, Gibbs, Vermaelen, Mertesacker, Sagna, Arteta, Ramsey, Cazorla, Oxlade-Chamberlain, Rosicky, Giroud, Fabianski, Podolski, Monreal, Sanogo, Kallstrom, Jenkinson, Bellerin.
West Ham squad: Adrian, Jaaskelainen, Demel, Tomkins, Johnson, Collins, O'Brien, Reid, Armero, Noble, Nocerino, Diame, Taylor, Nolan, J Cole, Downing, Jarvis, Vaz Te, C Cole, Carroll.