COLOGNE, GERMANY - MAY 10: Kevin Prince Boateng of Schalke looks on during the Bundesliga match between 1. FC Koeln and FC Schalke 04 at RheinEnergieStadion on May 10, 2015 in Cologne, Germany. (Photo by Lars Baron/Bongarts/Getty Images)
COLOGNE, GERMANY - MAY 10: Kevin Prince Boateng of Schalke looks on during the Bundesliga match between 1. FC Koeln and FC Schalke 04 at RheinEnergieStadion on May 10, 2015 in Cologne, Germany. (Photo by Lars Baron/Bongarts/Getty Images)