Toure’s representative said this week that the midfielder had achieved all he can at City and needs “new motivations.”
But Mancini said: “Every day we have a new challenge here, every day.
“In 2½ years we won the FA Cup, the Premier League, the Community Shield.
“Now we need to win another cup, another Premier League.
“We need to work more for this challenge. I think Yaya thinks that, like me, like the other players.
“I am happy that Yaya wants a new challenge because I also want a new challenge, I want to win the next game, the next game in the Champions League, everything together.”
Asked if he fears Toure will go, Mancini replied: “No, absolutely.”