The Dutchman had a short spell at the Bernabeu at the end of the 20th century, and believes that the fixture with Barcelona is one of football's most special encounters
Interim Chelsea boss Guus Hiddink was a Real Madrid coach for less than a year during an ill-fated spell at the club, but he remains fascinated with El Clasico.
Hiddink took over at Santiago Bernabeu in July 1998 but was sacked in February 1999.
Despite his short tenure and unhealthy relationship with the board he served, the Dutchman said matches between Real and Barcelona transcend sport.