Born in Madrid, Martín González was brought up in the Real Madrid youth system,[1] and would subsequently represent Spain at two youth levels. Having been almost exclusively associated with the club's reserves during his spell, he was loaned to fellow La Liga side CA Osasuna in January 1986. He only appeared in five matches in his first season in Navarre but was instrumental in helping the team to avoid relegation in the last round at the expense of Valencia CF, following a 1–1 home draw against Atlético Madrid.[2]
Martín González became an undisputed starter from the 1988–89 campaign onwards. Alongside namesake Martín Domínguez, he helped to a fourth-place finish in 1990–91 – playing all but one of the games – with the subsequent qualification for the UEFA Cup.[3]
Immediately after retiring, Martín González returned to Osasuna as an assistant coach and director of football (accumulating in some seasons). He was briefly fired in October 2003[5] but later returned, now in only the latter capacity; he occupied that position for several years,[6][7] leaving the El Sadar Stadium in August 2013.[8]
Martín González was appointed at Real Zaragoza of the second tier on 30 July 2014, still as a sporting director.[9] In December 2015, he left the club.[10]