Iglesias started coaching one year after retiring, his first appointment being at
Deportivo's reserves, which he accumulated with assistant duties in the main squad. Midway through the
1970–71 campaign he was named the first team's manager, leading them to a top-flight promotion and being
relegated in 1973. In
1973–74, Iglesias repeated the feat with another
Segunda División side,
Hércules CF, then remained at the club's helm for a further three years, always managing to comfortably stay afloat – this included a
fifth place in 1975 and
a sixth in 1976. In the
1977–78 season another promotion to the main division befell, this time as champions with
Real Zaragoza. Iglesias worked in the top tier in two of the next three seasons, leading
Burgos CF to the 13th position in
1978–79 and being fired by
AD Almería midway through the
1980–81 campaign amid several internal disputes. In 1982 he returned to Deportivo, with the club in division two. He was again reinstated as first-team manager, finally attaining promotion to the first division in
1991 after ranking second. In the following seasons, however,
Super Depor came to fruition, with several team players winning individual accolades and being called to the
Spain national team as the side finished three consecutive campaigns in the top three; during this timeframe, he was named Manager of the Year three times, twice by
Don Balón and once by
El País. Iglesias retired from football after
1994–95. Midway through
the following campaign, however, he accepted an offer from
Real Madrid to replace the fired
Jorge Valdano, with the
Merengues eventually ranking sixth and
being eliminated in the quarter-finals of the
UEFA Champions League by eventual winners
Juventus FC. In 2005, Iglesias was appointed manager of the
Galicia national team, working alongside
Fernando Vázquez. In the previous decade, he also worked as a
sports commentator. In 2016, Iglesias was bestowed with the highest recognition of Deportivo, a special insignia, and was declared "Blue and White Legend". The event took place at halftime of the last game of the
2015–16 season, at the
Estadio Riazor. ==Death==