The 28-year-old joined the Serie A giants on a permanent deal from Chelsea in 2023, and has gone on to make over 200 appearances, including a vital role in their 2021/22 title win.
However, he is not part of Ruben Amorim's plans at the San Siro, with no league appearances so far this season.
He's been recalled to the first team squad following a long-term injury for Matteo Gabbia, but Amorim is unmoved over his stance on the England international, who is now set to return to the Premier League as a free agent next summer.
Newcastle United are rumoured to be the front runners to complete a deal but other English clubs could offer a rival contract package.
