DORTMUND, GERMANY - APRIL 11: Fans of Dortmund are concerned of the bomb attack to the bus of Borussia Dortmund prior to the UEFA Champions League Quarter Final first leg match between Borussia Dortmund and AS Monaco at Signal Iduna Park on April 11, 2017 in Dortmund, Germany. (Photo by Christof Koepsel/Bongarts/Getty Images)
