Casemiro insists Manchester United are capable of winning the Champions League in the future.
The midfielder left Real Madrid for United in August.
He told ESPN Brasil: "As I said in my farewell, I gave everything at Madrid and I'm 30, I want to try new things, I want to help my teammates, to be on the pitch and I have many dreams.
“Not playing the Champions League with Manchester United? I have five (laughs), but just because I have five doesn't mean I don't want more… the Champions League is the most important competition you can win.
"In addition, United have been very affectionate with me, very attentive, from day one, as Real Madrid have always shown me."