However, the Argentine has insisted that he is delighted to have signed for an "important" club.
"I'm very happy to be in Paris," he told reporters. "The city is great, and the club is important in world football.
"I'm also very happy to be in a team with great players. I already discovered Europe by coming from Argentina and I adapted well in Palermo. The club and my team-mates did all they could for my integration.
"My programme now is to get in shape. I finished the season late because of the Copa America, and I had only 15 days of holiday."
PSG began their league campaign last weekend with a shock home defeat to Lorient.