Arrigo Sacchi (born 1 April 1946) is an Italian former professional football coach, best known for having twice managed AC Milan. Sacchi is regarded as one of the greatest managers of all time, and his Milan side (1987–1991) is widely regarded to be one of the greatest club squads of all time. Sacchi won the Serie A title in his 1987–88 debut season and then dominated European football by winning back to back European Cups in 1989 and 1990.
https://en.wikipedia.org/wiki/Arrigo_Sacchi