LONDON (AP) -- Arsenal defender Kieran Gibbs will miss both legs of the Champions League playoff against Besiktas after being ruled out for up three weeks with a hamstring injury.
The left back was hurt in Saturday's 2-1 win over Crystal Palace, Arsenal's opening match of the Premier League season. Nacho Monreal will likely come on as a replacement.
The second leg is on Aug. 27.
Arsenal is looking to qualify for the group stage of the Champions League for a 17th straight season.