The former goalkeeper believes that the Copa del Rey winners will record a big victory over their rivals in the first leg of the Spanish Supercopa
Madrid were beaten by the same scoreline in the first Clasico of 2010-11 but Buyo has no doubts that his former club will be the ones dishing out a heavy defeat this time around.
"Real Madrid and the favourites for the Supercopa. I think they'll win the first leg 5-0. They will then finish the tie with a 3-1 away win. Real Madrid have plenty of quality players," Buyo was quoted as saying by Marca.
Buyo wore the Real Madrid jersey from 1986 until 1997 and made over 300 official appearances for the club. He won six La Liga titles and two Copa del Rey trophies during his spell at the Bernabeu.
The first leg will be played on August 14 before the clubs meet again three days later.