"It means a lot, he's one of the best coaches in the world," Corberan said, via the Examiner.
"He was then coaching at the highest level in the Champions League and UEFA Cup doing amazing work."
Corberan also pointed out Benitez's influence on Spanish coaches.
He added: "He moved to Liverpool and at that moment he was one of the first Spanish coaches to have an impact outside of Spain.
"Especially here in England, he achieved a Champions League win against Milan that I remember very well because that was an amazing game so everyone knows his background, he is one of the best coaches in the world, and he's going to make the game tomorrow very difficult."
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