The France midfielder is now a major doubt for Sunday's Premier League clash with former club Arsenal after he was withdrawn in the first half of the Champions League clash
has limped out of Manchester City
's Champions League
tie against Real Madrid
at the Santiago Bernabeu with a suspected hamstring injury.
The French midfielder was withdrawn before half-time, with the scores at 0-0, and replaced by Aleksandar Kolarov after being helped from the pitch while clutching his right hamstring.
He could now be set to miss the encounter with his former club Arsenal on Sunday.
The former Arsenal and Marseille man has played a key role for City so far this season, making an appearance in every league game and scoring the winner in their 3-2 thriller against Southampton at the Etihad Stadium on opening weekend.
Nasri's start in Spain was his 51st appearance for Roberto Mancini's side.