MAINZ, GERMANY - JULY 12: Ja-Cheol Koo poses during the 1. FSV Mainz 05 Team Presentation at Coface Arena on July 12, 2015 in Mainz, Germany. (Photo by Simon Hofmann/Bongarts/Getty Images)
MAINZ, GERMANY - JULY 12: Ja-Cheol Koo poses during the 1. FSV Mainz 05 Team Presentation at Coface Arena on July 12, 2015 in Mainz, Germany. (Photo by Simon Hofmann/Bongarts/Getty Images)