Marcelo Bielsa has signed a new contract with Athletic Bilbao until 2013.
Bielsa, 56, has been in charge of Athletic since 2011, having previously managed Chile, and has impressed during his time at San Mames.
Hailed for his side's frenetic style of football, Bielsa led the Spanish club to the finals of the Copa del Rey and also the Europa League, while they finished tenth in La Liga this season.
Athletic, however, suffered defeat in both showpieces, and recent reports have suggested the Argentine could be targeted by Inter Milan.
But on Sunday, via a brief statement on the club's official website, Athletic confirmed Bielsa has signed a new contract.