It is no mean feat to win the World Cup as a player and as a manager. There are only three people to have done it.
1) Didier Deschamps
Deschamps won the World Cup as a player in 1998, captaining France to the title on home soil. In 2018, he managed Les Blues to a 4-2 win over Croatia in the title match, after France had reached the final for the first time since 2006, where they finished as runner-up to Italy.
Zagallo won the World Cup as a player twice with Brazil in 1958 and 1962. He then managed his country in 1970 where they won the famous trophy with a squad that contained the likes of Pele and Jairzinho.
The legendary German won the World Cup in 1974 on home soil. As a manager he would lead his country to the trophy in 1990 after defeating an Argentina side led by Diego Maradona.