MOENCHENGLADBACH, GERMANY - DECEMBER 20: Yann Sommer of Borussia Moenchengladbach greets a fan as he heads out for a warm up prior to the Bundesliga match between Borussia Moenchengladbach and VfL Wolfsburg at Borussia-Park on December 20, 2016 in Moenchengladbach, Germany. (Photo by Maja Hitij/Bongarts/Getty Images)