Arsenal will be without midfielders Mesut Ozil and Aaron Ramsey, the defender Kieran Gibbs and the striker Olivier Giroud, for their home game with Cardiff City on Thursday, and there are doubts over five other players too.
Gunners manager Arsene Wenger says they have yet to receive a specialist's report on Ozil's shoulder injury and that Ramsey would be out for three more weeks with a thigh strain.
The pair both missed the 1-0 league win at Newcastle United.
Giroud, who scored the only goal at Newcastle, will miss out against Cardiff because of an ankle injury and left back Gibbs has a calf problem.
Wenger also said he was uncertain about the fitness of defenders Nacho Monreal and Thomas Vermaelen, midfielders Tomas Rosicky and Jack Wilshere and striker Theo Walcott.
Arsenal go into the match with a one-point lead over Manchester City in the standings. City are away to Swansea.