The 39-year-old former defender, who was part of Italy's 2006 World Cup winning team, will replace another World Cup winner, Roberto Carlos of Brazil at the helm of affairs.
Zambrotta, who has reportedly signed a two-year contract with the Delhi-based ISL side, is regarded as one of the best full-backs in the world of his generation and he has plied his trade in several big clubs in Europe.
He started his career at Italian club Calcio Como in 1994 and later moved to AS Bari. But the major breakthrough in his career came when he joined Italian giants Juventus in 1999. The same year he made his debut for the national team.
At international level, he won 98 caps for the Italian national team, playing at three World Cups, three European Championships, and the 2000 Olympics. He was part of their side that reached the Euro 2000 final. He was a key member of the starting lineup of the Italian squad that won the 2006 FIFA World Cup.