The 21-year-old will join the Italian champions on a six-month loan. The deal includes a 15 percent capital gain in the event of a future transfer.

Alcaraz has played 47 times for Southampton, scoring four goals. He will replace the suspended Paul Pogba and Nicolo Fagioli in the squad. The Italian champions are looking to regain the Serie A title they last won in 2010. The last time they won the title was in 2008, when they beat AC Milan 2-1.