Born in Santa Marta de Penaguião, Vila Real District, Eurico made his professional debut with S.L.

Benfica at the age of 19, being regularly used in four Primeira Liga seasons and winning back-to-back national championships with the club (he also reached two domestic cup finals).

In 1979 he switched to Lisbon rivals Sporting CP, only missing one league game during his three-year spell and winning a total of three titles, including the double in 1981–82.

[2] Aged 27, Eurico signed with another team from the country's Big Three, FC Porto, again rarely missing one match until suffering a severe injury early into the 1985–86 campaign.

Selected for UEFA Euro 1984 in France, Eurico played in all the matches and minutes as Portugal reached the semi-final stage of the competition.