The Argentine has been linked with the Rossoneri but Parma will only consider huge offers for the player while Juventus target Jonathan Biabiany is not for sale
The Rossoneri have been credited with having an interest in the former Boca Juniors defender and the Crociati executive says it will take a huge fee to tempt his club into a sale.
“Whoever wants to sign Paletta has to pay €35m. There are no negotiations about that,” he told reporters.
When asked about other potential deals to bring in players, Leonardi insisted he had already got his man.
He added: "We are not in any other negotiations, we only wanted [Antonio] Cassano."
Leonardi is also determined to hold on to winger Biabiany, with speculation continuing to link the former France Under-21 international with Juventus.
He said: “Parma are not in the habit of selling its best players. And Biabiany is one of Parma's best players."
On Wednesday, the Gialloblu unveiled their latest recruit Brazilian defender Felipe from Fiorentina on a four-year deal.