Toure announced yesterday he would be leaving City.
The 32-year-old told the Manchester Evening News: "Me and my brother are winners, and I can't be here just to be here.
"He is playing so he stays here, but I have to go somewhere else to play, and that's what I'm trying to do now.
"He is a great player and has been fighting for the club. I like his attitude when he plays for City because you can feel that he wants to make things happen, to win.
"That's great for him and for the club. He came here and didn't let us down, because going from Barcelona to City was a big, big move. The move has paid off.
He added: "My only sadness is that I won't be here to help my brother restore Premier League glory to Etihad."