Reports in both Italy and England suggest City are preparing a massive offer of £63million to land the Italian stopper.
"At the end of the season we could even reach 150!
"No, joking apart, Gigi remains with us. He will not go anywhere."
The reports come after a statement by Buffon himself earlier in the week, with the keeper saying the right offer could persuade him to leave Juve.
"At the moment a move is not on the cards," Buffon told Gazzetta TV.
"Of course if someone offers £50million to the club I will be the first to tell the directors to sell me.
"I want the best for Juve and with that amount they could reinforce the squad."