Trapattoni began coaching at Milan as a youth team coach, before becoming caretaker coach.
Trapattoni was caretaker coach from 9 April 1974 to 30 June 1974.
His first match was the UEFA Cup Winners' Cup semi–final first leg against Borussia Mönchengladbach.
Milan won the match 2–0.
They got to the final after only losing the second leg 1–0.
Milan lost the final 2–0 to East German club 1.
FC Magdeburg.
Milan finished seventh in Serie A. He was appointed first team coach in 1975.

Trapattoni was head coach for Juventus for ten consecutive years, from 1 July 1976 to 30 June 1986.
Trapattoni won all UEFA club competitions (a European record).

He won the Serie A league title six times (1976–77, 1977–78, 1980–81, 1981–82, 1983–84, 1985–86), the Coppa Italia twice (1978–79 and 1982–83), the European Cup in 1984–85 (in a final against then-reigning champions Liverpool marked by the Heysel disaster), the Intercontinental Cup in 1985, the Cup Winners' Cup in 1983–84, the European Super Cup in 1984, and the UEFA Cup in 1976–77.

Apart from winning the European Cup in 1984–85, Trapattoni came close to conquering the trophy on another occasion, in 1982–83, but Juventus suffered a surprising defeat at the hands of Hamburg in the Athens final, finishing as runners-up.

During his years managing Juventus, Trapattoni established himself as one of the best managers in football history, well-known and respected among fans and journalists throughout Europe.
He was renowned for combining expert man-management with almost unmatched tactical knowledge.
Trapattoni began coaching at Milan as a youth team coach, before becoming caretaker coach. Trapattoni was caretaker coach from 9 April 1974 to 30 June 1974. His first match was the UEFA Cup Winners' Cup semi–final first leg against Borussia Mönchengladbach. Milan won the match 2–0. They got to the final after only losing the second leg 1–0. Milan lost the final 2–0 to East German club 1. FC Magdeburg. Milan finished seventh in Serie A. He was appointed first team coach in 1975.
Trapattoni was head coach for Juventus for ten consecutive years, from 1 July 1976 to 30 June 1986. Trapattoni won all UEFA club competitions (a European record).
He won the Serie A league title six times (1976–77, 1977–78, 1980–81, 1981–82, 1983–84, 1985–86), the Coppa Italia twice (1978–79 and 1982–83), the European Cup in 1984–85 (in a final against then-reigning champions Liverpool marked by the Heysel disaster), the Intercontinental Cup in 1985, the Cup Winners' Cup in 1983–84, the European Super Cup in 1984, and the UEFA Cup in 1976–77.
Apart from winning the European Cup in 1984–85, Trapattoni came close to conquering the trophy on another occasion, in 1982–83, but Juventus suffered a surprising defeat at the hands of Hamburg in the Athens final, finishing as runners-up.
During his years managing Juventus, Trapattoni established himself as one of the best managers in football history, well-known and respected among fans and journalists throughout Europe. He was renowned for combining expert man-management with almost unmatched tactical knowledge.
Giovanni Trapattoni