Former City man Rodney Marsh had alleged that the 30-year-old was becoming increasingly unsettled at the Etihad Stadium with the club's inconsistency in the Premier League this season.
But Toure, currently on international duty with the Ivory Coast, has refuted Marsh's claims in a tweet which also included a picture of him alongside brother Kolo.
"Hey buddies, don't listen to the rumors, I'm happy at city..the Toure brothers are in Casa and are missing Manchester," he wrote.
Toure started and played 90 minutes for his country in their 3-1 World Cup qualifying play-off victory at home over Senegal on Tuesday.
