Borussia Dortmund's training session in Istanbul [Getty Images]

ISTANBUL, TURKEY - OCTOBER 21: Borussia Dortmund's players run during Dortmund's training session at Turk Telekom Arena on October 21, 2014 in Istanbul, Turkey prior to UEFA Champions League group D match between Galatasaray and Borussia Dortmund. (Photo by Burak Akbulut/Anadolu Agency/Getty Images)

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