La Liga president Javier Tebas has warned Barcelona fans the Copa del Rey final could be called off if the Spanish national anthem is whistled ahead of kick off.
The game against Sevilla is scheduled for April 21 at Atletico Madrid’s Wanda Metropolitano Stadium and occurs with political tensions still high in Spain.
Back in October the Spanish government imposed direct rule over Catalonia after Catalan president Carles Puigdemont refused to abandon a push for independence.
Barcelona have already been affected by the political unrest, they played their La Liga match against Las Palmas behind closed doors after violent scenes during the Catalonia independence referendum.