Barcelona's fourth shirt is leaked - with strips like the Catalan flag on it.
According to 'Catalunya Radio', Barcelona will wear this shirt to show support to the declaration of independence for Catalonia.
It will be worn on the weekend of Saturday, November 30 or Sunday, December 1 - to be determined, at the Wanda for the Atletico vs Barcelona game.
There are growing protests in Catalonia recently as Spain government jailed a Catalonia leader for 13 years.