Forwards Theo Walcott (ankle) and Lukas Podolski (virus) will also be assessed, with the latter having missed the 1-1 draw with Everton on Wednesday. Defender Laurent Koscielny (thigh) is set for a spell on the sidelines, while defender Andre Santos (stomach muscle) and midfielder Abou Diaby (thigh) continue their rehabilitation. Pablo Hernandez is to miss Swansea's visit to the Emirates Stadium after picking up a thigh injury. The in-form winger suffered the injury in the midweek win over West Brom and will not feature against the Gunners, with Jonathan de Guzman set to return to the starting line-up in his place. Chico Flores should be available despite a shoulder problem, while striker Danny Graham will not be risked despite returning to training after an illness.