The Switzerland fullback signed for Milan towards the end of last season from Wolfsburg.
Gianluca Di Domenico told Sky Italia: "I see him very well Milan, the team was built to come back in a great way.
"Obviously it will take time, because so many new players have arrived. (Massimo) Mirabelli is a great football man and with (Marco) Fassone they form a great couple. "Both know what they want and Ricardo, he wanted Milan and Milan wanted Ricardo, so no problem."