AUGSBURG, GERMANY - DECEMBER 15: Ja-Cheol Koo of Augsburg looks on during the Bundesliga match between FC Augsburg and FC Schalke 04 at WWK-Arena on December 15, 2018 in Augsburg, Germany. (Photo by Sebastian Widmann/Bongarts/Getty Images)
AUGSBURG, GERMANY - DECEMBER 15: Ja-Cheol Koo of Augsburg looks on during the Bundesliga match between FC Augsburg and FC Schalke 04 at WWK-Arena on December 15, 2018 in Augsburg, Germany. (Photo by Sebastian Widmann/Bongarts/Getty Images)