“That's why I am here. It's an ambitious club,” Messi told a news conference. “You can see they're ready to fight for everything.
“My dream is to win another Champions League, and I think this is the ideal place to be to do that.”
The Argentinean conceded he did not know when he would be able to make his debut given he has not played since winning the Copa America with his country last month.
“I'm coming back from holiday, I've been a month off the pitch,” he said.
“I need a bit of a pre-season and get myself going. Hopefully debuting can be soon but I can't give you a date. It's up to the coaches.”
Paris St Germain's Lionel Messi and president Nasser Al-Khelaifi during the press conference. (Photo: Reuters)
Messi on Sunday wept as he told Barcelona fans he was leaving his childhood club, and admitted that while he is sad, he is looking forward to the new challenge.
“I'll always be thankful to Barca and their fans. I went there as a boy, and we had some good and bad times,” he said.
“The Barca fans knew I'd join a good club, fighting for the Champions League, because they know me, I like to win, I'm a winner and I want to carry on doing that.
“I don't doubt that PSG's objective is to win and grow. It would be nice on the one hand to face them in the Champions League, especially with fans, but on the other strange to go back to my home in another team's shirt - but that's football.”
