How could Catalonia line up?
If Catalonia was to gain independence, how would their national side line up?
Barcelona's win over Las Palmas on Sunday was marred by the protests taking place in relation to the Catalonian independence referendum.
Hundreds of people are said to be injured following clashes between police and people attempting to vote, after the the national government declared the referendum illegal.
Pique, Alba, Bartra and Busquets, who were all included in Spain's 25-man squad for the upcoming World Cup Qualifiers, could be part of a potential Catalonia XI.
Here is how they could line up: