The Sky Blues are set to clash with the La Liga champions in the last 16 of the competition this week after its traditional winter hiatus.
Toure spent three years of his career with the Catalan giants prior to joining City, winning two league titles, one Spanish cup and the Champions League during his time there.
Ahead of the game, the Ivorian ace said that he is not looking forward to facing a side that he has so much respect for:
“It’s difficult because I don’t really want to play Barcelona,” he is quoted by The Metro.
“It’s a club I have a lot of respect for, a club which taught me a lot and where I have many friends who helped me.
“I will play against these guys at the Camp Nou. It’s the stadium where I always wanted to play and now I’ll be coming back wearing a different shirt.
“I didn’t want to play in front of the fans who gave me so much love and respected me, but that’s football.”
City will host Barca in the first leg of the double header, after failing to top their group.
Manuel Pellegrini’s men will be making their first appearance in the knockout phase of the Champions League this year, after failing to get through the initial round of the competition during the past two seasons.