Iturralde refereed almost 300 matches in LaLiga before retiring in 2012.
According to him, a lot of people support Madrid from a young age, including most of the match officials.
“Around 90 per cent go with Real and 10% with Barcelona. Whether Barca [fans] like it or not, 70 per cent of the Spanish population, excluding Catalonia, are Real Madrid supporters.
“Personally, I don’t care about one or the other. I’m Athletic [Bilbao]. Everyone knows that I am Athletic, but I would go against them to try and be fair,” Gonzalez told Cadena Ser.
Barcelona have won 96 titles in their history, while Madrid have 94.
