Arsenal suffered a demoralising 2-0 revere at home to Swansea City last Saturday and followed it up with a 2-1 defeat away to Olympiakos in the Champions League on Tuesday.

A bout of injuries mean Wenger's side will now have to make do without several first-team regulars against in-form West Brom at the Emirates Stadium.

"Lukas Podolski and Theo Walcott are out," Wenger said.  "Bacary Sagna and Laurent Koscielny are not back.

"From Tuesday night in Greece there are no new injuries so we have a selection from the combined squad of Tuesday and Saturday."

Podolski missed out on Tuesday's trip to Athens but Wenger does not expect the Germany international to be out for too long.

"It is a hamstring," he said. "It should be short-term."

Wenger is also expecting Andre Santos to return to action in the near future, with the Brazilian fullback not having featured since Arsenal's win over Tottenham in the north London derby last month.

"He will not be ready for Saturday but he is not far away with an abdominal injury," Wenger said.