The former Barcelona ace was presented with PSG's other four summer signings Sergio Ramos, Gianluigi Donnarumma, Georginio Wijnaldum, and Achraf Hakimi in a welcome ceremony at the centre of the pitch just one hour before the kick-off.
"This is very difficult, I was not prepared for this. Last year I was convinced to leave, but this year we were, my family and I wanted to continue here, in our house," Goal.com quoted Messi as saying.
Messi posted a photo of himself with the Copa America title after Argentina outclassed Brazil in the finals earlier this month. As a result of winning Copa America, Messi recorded his first international title with Argentina.
The message, posted on social media, came less than a day after the Albiceleste beat Brazil 1-0 in the Copa America final at Rio de Janeiro's Maracana stadium, ending Argentina's 28-year wait for a major trophy on Sunday.