Ibra will partner Brazilians Ronaldinho and Pato in a stellar 4-3-3 system.
"The strike force is fantastic, the best in Europe and the world, but the whole team is strong and I am certain the fans will enjoy themselves," he said.
"Everywhere I go, I try to win, and I'm coming to a club that has many trophies already. I hope we can get the Champions League this season, but also the Scudetto.
"I hope to stay for all four years of my contract, but I also know that football can change quickly."