Why Herrera is playing for free in Spanish third division

Ander Herrera's most recent competitive game was in front of a raucous La Bombonera crowd playing for Boca Juniors in the Copa Libertadores.

His next will be in the Spanish third division in front of roughly 6,500 fans against a regional side, Gimnastic de Tarragona.

But Herrera says his return to Real Zaragoza on a free transfer from Boca is just as important as any move he has made in his career.