Both clubs announced the venue after agreeing on it at the Spanish Football Federation on Monday.
The finalists originally wanted to play at Santiago Bernabeu Stadium, the country’s biggest neutral ground, but Real Madrid announced it was not available because it had been hired out for a Bruce Springsteen concert.
Although Madrid kept quiet about the arrangement, many believe it wanted to avoid the risk of seeing its biggest rival celebrating a title win on its ground.
Barca maintained their push for trophies on all fronts with an 8-1 aggregate victory over Valencia in the semi-finals, while Sevilla overcame Celta Vigo 6-2 on aggregate.
Sevilla last won the Copa del Rey in 2010, but were the last team to beat Barca back in October.
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