The France international collided with Jonas Gutierrez in the 36th minute before hobbling to the touchline towards the City bench. The 25-year-old was subsequently replaced by Aleksandar Kolarov...
Roberto Mancini confirmed after the game that nasri is likely to miss next week's clash with struggling Reading, and hailed the Frenchman's performance during his time on the pitch.
The Italian told the club's official website: "We will see tomorrow, but I don't think that for [next] Saturday, he will be ready.
Kolarov himself was subbed off after seventy minutes himself, and my be injured as well. If so, might that open a midfield spot for Scott Sinclair against Reading, the league's worst defence.