With all this uncertainty in Catalonia, and the possibility of some sort of civil war breaking out. It would probably be best to keep the cup in the Dam next year.
There wont be a civil war... The Catalans are non violent people and the 50% who oppose the separatists won't be fighting their brothers accross the street.
Speaking to people about the possible scenarios, our enemies will be far too busy with each other to mess with the club system. Even if Madrid takes over the regional government they cant really mess with the clubs as they are regulated more locally and they cant/won't be taking the councils over.