Schalke's midfielder Kevin Prince Boateng (L) and Schalke's Austrian defender Christian Fuchs (C) discuss with referee Peter Gagelmann (R) during the German first division Bundesliga football match FC Schalke 04 vs Bayer Leverkusen in Gelsenkirchen, western Germany, on March 21, 2015. Leverkusen won the match 0-1. AFP PHOTO / PATRIK STOLLARZ DFL RULES TO LIMIT THE ONLINE USAGE DURING MATCH TIME TO 15 PICTURES PER MATCH. IMAGE SEQUENCES TO SIMULATE VIDEO IS NOT ALLOWED AT ANY TIME. FOR FURTHER QUERIES PLEASE CONTACT DFL DIRECTLY AT + 49 69 650050. (Photo by PATRIK STOLLARZ / AFP via Getty Images)