Athletic Club de Bilbao is a Spanish team that is famous for having a policy that requires them to only recruit players coming from the Basque region of the country. This policy has been in place for over 100 years and has resulted in the club having a strong academy, but when needed are able to buy players that fulfill the criteria of the policy (i.e. players born in the Basque region that play for a different team). Partially due to this policy, Bilbao haven't won the league since 1984, but remain one of only three clubs that have never been relegated from the Spanish first division since it's inception in 1929.