 (Antonini and Abate to Milan for a total fee of €4.75 million, Pozzi and Marzoratti to Empoli for a total fee of €4.75 million)

In his first season with the "Rossoneri", he did not get much playing time though, making only 11 league appearances.For the 2009–10 campaign, Milan signed new head coach Leonardo, who initially did not seem to take Antonini into much consideration.However, as the season progressed, injuries to first-string players such as Zambrotta and Jankulovski prompted the Brazilian to put him in the line-up.