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ST ALBANS, ENGLAND - DECEMBER 08: Theo Walcott of Arsenal warms up with team mates during an Arsenal training session ahead of the UEFA Champions League match against Olympiacos at London Colney on December 8, 2015 in St Albans, England. (Photo by Dan Mullan/Getty Images)

ST ALBANS, ENGLAND - DECEMBER 08: Theo Walcott of Arsenal warms up with team mates during an Arsenal training session ahead of the UEFA Champions League match against Olympiacos at London Colney on December 8, 2015 in St Albans, England. (Photo by Dan Mullan/Getty Images)
Getty Images

Getty Images Sport Dan Mullan