AC Milan have confirmed the signing of Italy international Andrea Bertolacci from Roma.
The 24-year-old has penned a four-year contract with the Rossoneri for an undisclosed fee.
He had spent the past three years playing for Genoa, before Roma signed him on a permanent basis last week.
"I've arrived at a very important club, I can't wait to get started," Bertolacci told Milan's official website.
"Milan were always the first choice for me, I really wanted this club. The club has immediately shown me a lot of affection.
"There's an important project, and great desire after a difficult season. I want and need to improve, I have to build on an important year and help take Milan back to the top."
Bertolacci made his debut for Italy last year and has picked up three caps for his country.