brussels independent catalonia would apply join european union president executive european commission say thursday add policy would apply new state catalonia parliament lay grind referendum independence madrid oct. although spain constitutional court suspend vote judge consider whether legislation contravene spain constitution yes vote favor catalan independence respect opinion catalonia able eu member state day vote commission chief jean-claude juncker say youtube broadcast euronews echo stance make predecessor jose manuel barroso juncker say newly independent state must follow eu membership procedures aspirants cite scotland jest home country luxembourg northern luxembourg cede south rule would apply juncker say eu accession negotiations arduous process involve comply eu standards rule win consent eu governments mean spain would able block catalonia eu accession wish croatia last country join eu 2013 first apply membership 2003. independent catalonia would need apply join eu juncker