Del Bosque was sacked by president Perez in 2003, despite winning two Liga and two Champions League titles in four seasons as Merengues boss.
Following a trophyless season that saw Jose Mourinho resign as Real manager, Perez said Del Bosque “would have a home at Real Madrid” if he left his role as national team coach.
But the 62-year-old said he would not be interested in such a move, telling Eurosport: “I don’t intend working for Real Madrid again or any other club. I appreciate what he said but I’m fully focused on the national side.”
Del Bosque also gave his support to Iker Casillas, whose fall-out with Mourinho has been credited as a source of disharmony at the club.
The Spain goalkeeper had been a first-team star since his teens, but a loss of form and an injury saw Mourinho prefer Diego Lopez for much of the season.
His national team boss has continued to select the 32-year-old, despite pressure from the likes of David De Gea, Jose Manuel Reina and Victor Valdes.
“It’s been painful to see what Iker has been through,” he said. “I put myself in his shoes and think he must have thought: Why is this happening to me?
“His record stands up against anyone’s. I’ve stood by him because he is a major asset to the national team but I’ve never meddled in the Real Madrid coach’s decisions.”