The North-West outfit suffered a 3-1 loss at the hands of the tournament holders in their last European outing.
"This is a very important game for us and the Bayern game is in the past," the Manchester Evening News quotes Toure. "You can have a bad, bad day sometimes and the game against Bayern was a day like that.
"For us the most important thing is to focus on this game. It's going to be very important and I hope we win it.
"In football you have to learn from your defeats. If your opponent is better, you have to accept that, and you have to think that you can do better."
City are currently second in their Champions League group.