[1][2][3] Aldecoa began his football career with Wolverhampton Wanderers, joining them in 1943 from a Staffordshire electrical works team.
His first team debut came in September that year, a 2–1 victory away to Crewe Alexandra and he finished the season as Wolves’ leading scorer with 11 goals in 30 games.
The following season, as league football resumed after World War II, he played 29 times for Coventry, failing to score.
During his spell he was noted for his practical skills, helping to repair the Highfield Road stadium as well as the home of the local family with whom he was living.
[1] Aldecoa returned to Spain in 1947, joining Atlético Bilbao and making his debut on 21 September 1947 in a 5–1 defeat away to Celta Vigo.