Lasa was born in the small town of
Legorreta,
Gipuzkoa. He was a product of local
Real Sociedad's youth academy, and made his
La Liga debut not yet aged 18, as the
Basque side was coached by
John Toshack, during the
1988–89 season. Subsequently, Lasa signed with
Real Madrid for the
1991–92 campaign for approximately
€1.7 million, seen as a replacement for the ageing
Rafael Gordillo. however, he would be virtually absent from the lineups following the signing of Brazilian
Roberto Carlos in summer 1996. Lasa joined Real Sociedad's neighbours,
Athletic Bilbao, in
1997–98, being an important first-team player as they achieved a runner-up place. He played very little in his final three seasons, and retired in 2004 following
Segunda División spells with neighbours
Real and
Ciudad de Murcia. Lasa started his managerial career in December 2021, taking charge of
Futuro Kings FC in the
Equatoguinean Primera División. ==International career==