Sandro is currently playing for Italian side Benevento who have just been relegated to Serie B.
The midfielder signed for QPR in 2014 and struggled with injuries and was sent out on loan.
Last January he signed for Turkish side Antalyaspor, with QPR cutting ties with the Brazilian.
He moved on loan to Benevento in January and helped the doomed side to a shock victory over Milan at the weekend.
It is unsurprising then that Milan are now taking an interest in him, especially considering the way he helped Tottenham to a win at the San Siro back in 2011.
Milan face competition from Atletico Madrid and Valencia, according to Tuttomercatoweb.
The former Brazil international only made 36 appearances for QPR across three seasons, and by time he was moved on, it was important for the club to get his high salary off their books.
Injuries meant QPR never saw the best of him, and if he joins Milan, he deserves credit for earning himself a big move when it seemed his better days may be behind him.
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