AC Milan have confirmed the signing of Genoa left-back Luca Antonelli. The 27-year-old came through the club’s youth ranks, only to join Genoa via a three-year stint at Parma in 2011. Now, the seven-time Italian international has returned to the San Siro, where he’ll play a big role in the first team.  AC Milan have had major defensive problems this season, with their centre-backs their main culprits. However, left-back has been a problem position for them for an awfully long time, so Antonelli will offer them some much needed quality and depth on that side of the field. He’s certainly no world beater, but his spell at Genoa has shown him to be a very solid player, who will offer as much in attack as he will in defence.