Born in
Santander, Aguilar started his career with local
Racing de Santander, making his senior debut at 19 and helping the
Cantabrians to achieve promotion to
Segunda División in 1970. The following year, he signed with
La Liga powerhouse
Real Madrid alongside teammate
Santillana, Safe for two seasons, Aguilar was regularly used during his spell, winning five leagues and two
Copa del Rey – including
the double in the
1974–75 campaign – and appearing in 190 competitive games. Aguilar retired from football in June 1983 at the age of 34, after two years with another club in
Madrid, second-tier
Rayo Vallecano (12 goals from 36 appearances in
his first). Over ten seasons, he amassed top-flight totals of 190 matches and 40 goals. ==International career==