The French midfielder picked up the injury after making a bright start to the game at St James Park and could now miss the majority of the hectic period which sees his side face four games in 11 days.
Nasri has endured an inconsistent career so far at the Etihad after signing from Arsenal in 2011 and the 25-year-old has failed to live up to expectations in many peoples eyes.
Ironically, he looked very good in the early stages against Newcastle and laid on Sergio Aguero’s opener after showing alertness to square the ball to his teammate for a tap in.
City fans would have been hoping that was to be the start of a good run of form for the Frenchman in a very important period of the season for the Sky Blues, but they may now have to make do without him for for a while.
Roberto Mancini’s men face Reading at home this weekend, after which they travel to Sunderland and Norwich City, before finishing the festive fixtures with the visit of Stoke City on New Years Day.
They will view this run of games as vital as they look to claw back a six point gap on leaders Manchester United, meaning they can ill afford to drop points going into 2013.