The big-spending Ligue 1 side presented the Brazilian defender to the press following his €42m move from Italian side AC Milan and his exploits at the London Olympics with Brazil
Silva and Ibrahimovic completed the transfer to France from AC Milan earlier this summer as the Paris club looks to build one of the strongest squads in the world.
"One of the best forwards in the world and the best defender in the world makes up the foundation of this project," El Khelaifi said.
The 27-year-old Silva had been unable to participate in the cash-rich Parisians' preseason preparations due to his involvement at the Olympic Games with Brazil after the transfer deal worth 42 million euros was done.
Now bearing the title of the world's most expensive defender, Silva admits his head was turned after speaking to PSG sporting director Leonardo and head coach Carlo Ancelotti.
"After speaking with Leonardo and [Carlo] Ancelotti, I was more interested [in joining PSG], and now I am here, very happy, and I believe in this project," Silva mused.
"I'm happy to be at one of the biggest clubs in the world. If I wasn't completely convinced of the quality of this team and this project I wouldn't have come here."
Silva spoke passionately about competing at London 2012, revealing that it was difficult to concentrate on Olympic matters at first while negotiations were ongoing.
"The negotiations were not easy," he said. "The situation was complicated refusal to Berlusconi. I remained quite disturbed by the negotiations at the same time I was focused on the London Games. I am not worried. There was a second negotiation and I am delighted. I'm thrilled, happy to be here with my family and hopefully have the same success in Milan."