Athletic Bilbao's Basque-only 'philosophy' – and why some are calling for change - The Athletic

Athletic supporters are fiercely proud of the policy, but some club members are asking whether the interpretation of it should be extended

PDF) Identities at Play: Non-Basque Supporters' Reflections on Athletic Bilbao's Basque-only Signing Philosophy

Why does Bilbao only sign Basque players? - Quora

How Marcelo Bielsa turned Athletic Club into one of Europe's most exciting machines

PDF) Identities at Play: Non-Basque Supporters' Reflections on Athletic Bilbao's Basque-only Signing Philosophy

PDF) Identities at Play: Non-Basque Supporters' Reflections on Athletic Bilbao's Basque-only Signing Philosophy

Struggling Athletic Bilbao staying loyal to Basque-only policy – The Irish Times

Why does Bilbao only sign Basque players? - Quora

Basque to the bone? Why Athletic Bilbao vs Real Sociedad is more than a game

The Athletic Bilbao story — and why it could be about to get even better - The Athletic