GELSENKIRCHEN, GERMANY - MAY 02: Joel Matip of Schalke (R) challenges Filip Kostic of Stuttgart (L) during the Bundesliga match between FC Schalke 04 and VfB Stuttgart at Veltins Arena on May 2, 2015 in Gelsenkirchen, Germany. (Photo by Christof Koepsel/Bongarts/Getty Images)
