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MOENCHENGLADBACH, GERMANY - MARCH 16: Mahmoud Dahoud of Moenchengladbach reacts after a penalty decision for Schalke during the UEFA Europa League Round of 16 second leg match between Borussia Moenchengladbach and FC Schalke 04 at Borussia Park Stadium on March 16, 2017 in Moenchengladbach, Germany. (Photo by Alex Grimm/Bongarts/Getty Images )

MOENCHENGLADBACH, GERMANY - MARCH 16: Mahmoud Dahoud of Moenchengladbach reacts after a penalty decision for Schalke during the UEFA Europa  League Round of 16 second leg match between Borussia Moenchengladbach and FC Schalke 04 at Borussia Park Stadium on March 16, 2017 in Moenchengladbach, Germany.  (Photo by Alex Grimm/Bongarts/Getty Images )