Arsenal have confirmed that Mikel Arteta and Mathieu Debuchy will both be out of their lineup for three months.
Arteta, 32, last played for the Gunners against Borussia Dortmund on Nov. 26, but damaged his calf during the game.
Debuchy dislocated his shoulder against Stoke on Sunday.
"Mathieu had a surgery on his right shoulder following the injury on Sunday," said Arsene Wenger. "It's very unfortunate for Mathieu, it's unbelievable because he's had two surgeries in the same season.
"He just came back, he played seven games and he's out again. I count three months out for Mathieu because contact will be a problem for the shoulder."
Via ESPN