MADRID, SPAIN - MARCH 2: (L-R) referee Alberto Undiano Mallenco, Sergio Busquets of FC Barcelona, Luka Modric of Real Madrid, Arturo Vidal of FC Barcelona during the La Liga Santander match between Real Madrid v FC Barcelona at the Santiago Bernabeu on March 2, 2019 in Madrid Spain (Photo by David S. Bustamante/Soccrates/Getty Images)
