The 34-year-old recently announced that he will be leaving Man Utd as a free agent once his contract expires in June.
Casemiro has been incredible for the Red Devils this season, scoring six goals and providing two assists in his 29 games.
Fans are urging the veteran midfielder to stay, but he is understood to be unmoved by their pleas and is still looking to move on.
According to journalist Mirko Di Natale, the Brazilian has been offered to Serie A giants AC Milan and Juventus.