Despite winning the Ligue Un title last season, Mauricio Pochettino has been sacked by PSG after just 18 months in charge.
The Argentine boss took over the French giants in 2021 from former side Tottenham, but his shortcomings in Europe have cost him his job.
PSG have now turned to Christophe Galtier as Pochettino's replacement, with the 55-year-old agreeing a two-year contract with the club.
The former Nice manager will now be tasked with taking over the club's pursuit of a first ever Champions League title.
"Paris St Germain confirms that it has ended its collaboration with Mauricio Pochettino," said a statement.
"The club would like to thank Mauricio Pochettino and his staff for their work and wish them the best for the future."
Galtier, the 55-year-old former Portsmouth assistant manager, was announced as the new PSG manager just hours after Pochettino's departure.
He'll take training on Wednesday morning, and be in charge of the side for their upcoming pre-season tour.
After his appointment, Galtier was asked how he'd handle a dressing room full of stars.
"These are players who want to win, to have fun," he replied.
"I have encountered locker rooms where there was a lot of ego. The first thing is to talk with them but also to impose.
"We must have a common project without any compromise. I will observe, listen. I know that I will have the support of my management to sanction any player."
This is a breaking news story that will be updated with more information shortly.
Planet Sport is your home of breaking news across all sports, and you can also access all the latest live scores in our dedicated live centres. Find out more about the team behind Planet Sport, your world of engaging sports content, here