Fiorentina midfielder Alessio Cerci, Partizan Belgrade defender Stefan Savic and AZ Alkmaar keeper Sergio Romero are all targets for the Italian.
Safe hands: Sergio Romero has been linked with a move to Manchester City
The Eastlands boss expects to sign Savic, 20, for around ?7million while Cerci would command a similar fee.
Romero played all of Argentina's matches at the World Cup in South Africa and would provide competition for Joe Hart, especially if Shay Given leaves the club.
Fresh talent: Roberto Mancini is planning to add to his squad ahead of City's Champions League campaign
Mancini is leaning heavily on two trusted agents to help pull off the raids - Sergio Berti, who represents Cerci and Savic, and Mino Raiola, who looks after Romero.
Both have helped him in the past with Raiola playing a part in Robinho's ?18m sale to AC Milan.
City to bid ?38m for Sanchez in effort to beat Barcelona and Chelsea to Chile wingerThanks, but no thanks! Adebayor snubs move to Russian side Zenit St PetersburgPalermo slap ?44m price tag on Manchester City target PastoreAll the latest Manchester City news, features and opinion
Explore more:People: Shay Given, Roberto Mancini, Joe Hart Places: Argentina, South Africa