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DORTMUND, GERMANY - APRIL 12: A general view showing the Dortmund fans during the UEFA Champions League Quarter Final first leg match between Borussia Dortmund and AS Monaco at Signal Iduna Park on April 12, 2017 in Dortmund, Germany. The match was rescheduled after an alleged terrorist attack on the Borussia Dortmund team coach as it made it's way to the stadium. (Photo by Maja Hitij/Bongarts/Getty Images)

DORTMUND, GERMANY - APRIL 12: A general view showing the Dortmund fans during the UEFA Champions League Quarter Final first leg match between Borussia Dortmund and AS Monaco at Signal Iduna Park on April 12, 2017 in Dortmund, Germany. The match was rescheduled after an alleged terrorist attack on the Borussia Dortmund team coach as it made it's way to the stadium.  (Photo by Maja Hitij/Bongarts/Getty Images)