LONDON, ENGLAND - SEPTEMBER 29: Alexis Sanchez of Arsenal scores a goal during the Champions League match between Arsenal and Olympiacos at The Emirates Stadium on September 29, 2015 in London, United Kingdom. (Photo by Mitchell Gunn/Getty Images)
LONDON, ENGLAND - SEPTEMBER 29: Alexis Sanchez of Arsenal scores a goal during the Champions League match between Arsenal and Olympiacos at The Emirates Stadium on September 29, 2015 in London, United Kingdom. (Photo by Mitchell Gunn/Getty Images)