The former Australian manager has signed for the Scottish club on a 12-month rolling contract.
Celtic have appointed Ange Postecoglou as their new manager on a 12-month rolling contract.
The Hoops have been in the search for a new manager after Neil Lennon resigned in February as they failed to win their tenth consecutive title.
Although The Scottish giants have been linked with a handful of names, they have settled with the former Australian boss.
The 55-year-old will move to Celtic Park after a three-year spell from Yokohama Marinos, the club which he led to the J-League title in 2019.
Postecoglou commenced his coaching career in 1996 and has since managed sides like Brisbane Roar and Melbourne Victory while enjoying much success with the former one.
He also served as the manager of the Australian national team for four years and also won the AFC Asian Cup in 2015.
Postecoglou expressed his joy on getting the job with the Hoops: “I will be doing everything I can to get our great club back on top.”
“We want to entertain our fans, and we want to win; these are the objectives which I always set myself and which I now begin work on.
“The opportunity that has been given to me is one of the greatest honours in football.”
The Australian boss will oversee his first game in Celtic’s Champions League qualifying game when he completes his 10-day quarantine.
The pressure will certainly be on for Postecoglou as Celtic would look to bounce back after a disappointing SPFL season.