Reports in Italy have suggested that AC Milan front man Zlatan Ibrahimovic is a target for the Premier League champions.
Napoli forward Ezequiel Lavezzi and Bologna striker Gaston Ramirez have also been linked with the Eastlands club.
"Ibrahimovic is a champion," Mancini told Gazzetta dello Sport. "But I already have four very strong strikers. I just need them to compete in the Champions League. We are okay up front."
City boast rich talent in attack with Sergio Aguero, who scored the dramtic injury-time title winning goal against QPR, Mario Balotelli, Carlos Tevez and Edin Dzeko vying for places.