Arsenal’s (from left to right) Granit Xhaka, Alexandre Lacazette, Pierre-Emerick Aubameyang and Mesut Ozil appear dejected after Crystal Palace’s Jordan Ayew (not pictured) scores his side’s first goal of the game during the Premier League match at Selhurst Park, London.

Arsenal's (from left to right) Granit Xhaka, Alexandre Lacazette, Pierre-Emerick Aubameyang and Mesut Ozil appear dejected after Crystal Palace's Jordan Ayew (not pictured) scores his side's first goal of the game during the Premier League match at Selhurst Park, London.

Arsenal’s (from left to right) Granit Xhaka, Alexandre Lacazette, Pierre-Emerick Aubameyang and Mesut Ozil appear dejected after Crystal Palace’s Jordan Ayew (not pictured) scores his side’s first goal of the game during the Premier League match at Selhurst Park, London.