London, England – Arsenal defender Laurent Koscielny will be sidelined three weeks with a thigh injury, manager Arsene Wenger said.
Koscielny limped out of Wednesday's 1-1 draw at Everton in the English Premier League.
"It is a muscular problem, a thigh problem," Wenger said. "That is normally three weeks."
Koscielny has played 12 matches, including 10 starts, in all competitions this season.