see more

MADRID, SPAIN - APRIL 18: Referee Viktor Kassai in action during the UEFA Champions League Quarter Final second leg match between Real Madrid CF and FC Bayern Muenchen at Estadio Santiago Bernabeu on April 18, 2017 in Madrid, Spain. (Photo by Matthias Hangst/Bongarts/Getty Images)

MADRID, SPAIN - APRIL 18: Referee Viktor Kassai in action during the UEFA Champions League Quarter Final second leg match between Real Madrid CF and FC Bayern Muenchen at Estadio Santiago Bernabeu on April 18, 2017 in Madrid, Spain.  (Photo by Matthias Hangst/Bongarts/Getty Images)