On the way out of City are strikers Benjani, Valeri Bojinov, Felipe Caicedo, Kelvin Etuhu and Jo.
Winger Martin Petrov, who missed the last three months of the season with a knee injury after briefly returning to the first-team, is also heading for the exit door.
And there remain question marks over the futures of Craig Bellamy, Stephen Ireland, Nedum Onuoha, Micah Richards, Shaun Wright-Phillips, Patrick Vieira and Sylvinho.
Robinho, who returned to his native Brazil to join Santos on loan in January, will also leave City, following the failure of his record £32.5m move.
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