The France international has struggled to replicate his form from last season for the Citizens, scoring just once in 12 Premier League appearances.
City manager Roberto Mancini has already publicly criticised the former Marseille midfielder, who became embroiled in a controversial clash with a journalist at Euro 2012.
But Nasri’s agent Jean-Pierre Bernes is confident the playmaker can bounce back and resurrect his career at the defending Premier League champions.
“We can not be condemned forever because you had a clash with a journalist,” said Bernes.
“Anyway I am absolutely not worried. Sami’s value has not vanished, everyone knows it.
“Look at Ribery, two years ago everyone wanted to throw him away. Nowadays Franck is the French team and Bayern star because he worked hard and that is the way which Samir has to follow, he knows it and he will fight.”
Nasri has scored nine goals in 61 appearances for City after completing a £25m move to the Eastlands outfit from Arsenal in August 2011.