ISTANBUL, TURKEY - AUGUST 19: Mustafa Pektemek of Besiktas (11), Arsenal's keeper Wojciech Szczesny (R) and Calum Chambers (2nd L) rise for the ball during the UEFA Champions League play-off first leg match between Besiktas and Arsenal at Ataturk Olympic Stadium in Istanbul, Turkey on August 19, 2014. (Photo by Metin Pala/Anadolu Agency7Getty Images)