Barcelona could play with the Catalan flag on their shirts against Atletico

Barcelona often use their shirt with the 'senyera' on at some point during the season and the Catalan club are already setting a date to do so in the current academic year (2019/20).
The cited media have spoken about the fact that Barcelona could wear this fourth kit in the game on the 15th week of La Liga, which will take place away from Camp Nou.
It will be in a match as followed and awaited as the one against Atletico Madrid at the Wanda Metropolitano, although there is still more than a month to go until the game.
Barcelona, obviously, have not reported anything and all of this is just rumours at the moment, because the Barcelona are entitled by contract with Nike to use this shirt when they see possible and suitable.
It is not the first time that they have worn this shirt against Atletico, since in the 2014-15 season they were placed in the Spanish Super Cup.