Nasri broke a bone in his hand while away on international duty with France this week, but Mancini insists Nasri will be fit for the clash with Wigan.
Gareth Barry is doubtful for the game with Wigan, due to a ankle injury, while Nigel de Jong and Micah Richards should be fit for the game.
“For Nasri, it’s not a problem because he’s not a keeper,” Mancini told Sky Sports News.
“Gareth has a little problem. I want to see tomorrow but it’s difficult. Nigel can play and Micah is okay.”
