DORTMUND, GERMANY - SEPTEMBER 16: Hector Bellerin (R) of Arsenal and Henrikh Mkhitaryan (L) of Borussia Dortmund battle for the ball during the UEFA Champions League Group D match between Borussia Dortmund and Arsenal at Signal Iduna Park on September 16, 2014 in Dortmund, Germany. (Photo by Friedemann Vogel/Bongarts/Getty Images)
