ST ALBANS, ENGLAND - JULY 21: (L-R) Serge Gnabry and Joel Campbell of Arsenal during a training session at London Colney on July 21, 2016 in St Albans, England. (Photo by Stuart MacFarlane/Arsenal FC via Getty Images)
ST ALBANS, ENGLAND - JULY 21: (L-R) Serge Gnabry and Joel Campbell of Arsenal during a training session at London Colney on July 21, 2016 in St Albans, England. (Photo by Stuart MacFarlane/Arsenal FC via Getty Images)