Sao Paulo have announced they're prepared to sell Casemiro next month.
Inter Milan and AS Roma are among clubs interested in the midfielder.
"After we improved his salary his form dipped," Sao Paulo President Juvenal Juvencio said.
"He is wanted by a lot of sides in Europe and if we receive a good offer then we will sell him.
"I think an offer of around 10m will be sufficient for us."