 He played for the club for five years, and was a key player in the 2005 Clausura tournament winning team.In 2006, Somoza was transferred to "La Liga"'s club Villareal CF on a five-year contract.At Villarreal he joined fellow countrymen Juan Román Riquelme, Gonzalo Rodríguez, Rodolfo Arruabarrena, Fabricio Fuentes and Mariano Barbosa.