The Swede is poised to join Thiago Silva at the Parc des Princes, but the forward's representative is still trying to reach an agreement over wages
The Rossoneri have already agreed to sell the Sweden international to the Ligue 1 outfit, but the 30-year-old is yet to agree personal terms with the Qatari-owned club.
"We are lacking details, but the details are important," Raiola told Sky Sport Italia. "How many millions? I did not go to school; I do not know how to count.
"There are various discussions; it is a major contract. If Ibra does not want to leave, he will not sign. There are these great moments and opportunities and if all goes well, good; if it does not go well, no matter.
"But we are here to do things well. PSG are a team that will be among the best in a few years, if they are not already."
While Ibrahimovic is poised to seal a lucrative switch to the Parc des Princes, Raiola insists that there is no chance of Manchester City forward Mario Balotelli moving this summer.
"Unsellable before; now untouchable," the agent declared. "The sheikhs [at Eastlands] are completely convinced in the Balo brand; he should become one of the strongest players in the world."