However, the presence of his sibling and Mikel Aranburu in central midfield meant that he was restricted to a supporting role, and he was then sent on loan to Segunda División's CD Numancia for 2003–04 but, while he was dedicated to the Soria team's bid for promotion, he remained keen to establish himself at Real Sociedad, returning at the end of the season; under the management of José Mari Bakero, the player's importance to the team was demonstrated in the 2005–06 campaign, when he was the club's most used footballer playing in 37 games.