He reasoned: "I am not used to focusing on one goal, which has happened this season. Next year we will be challenging for the Scudetto and Champions League and need a big and quality squad."
Asked about proposed signings, Buffon added: "Amauri (Palermo) is among the best attackers available on the market.
"I would have liked to have seen Mathieu Flamini (Arsenal) signed, but we moved too late.
"Ronaldinho (Barcelona) would be good here, but it depends on whether he wants to talk with us."