Xavi said that believes the signing of the Ibrahimovic will propel the Paris side to European success in the future. The Spaniard also insisted that the 30-year-old performed "fantastically" while he was at the Nou Camp.
"He is a great signing," said Xavi. "He performed fantastically for us and he is a top level player.
"He can bring a lot to them, and is the signing they needed to go on and win the French title.
"We won La Liga and got to the semi-finals of the Champions League, he scored important goals and we had a good understanding with him on the pitch and in the dressing room."
Ibrahimovic made 32 league appearances for AC Milan last year, scoring 28 goals.