Mancini's side were linked with the 17-year-old last year when it was rumoured he might transfer to City as part of a swap deal for out of favour Roque Santa Cruz.
The move never materialised but according to reports in Italy City are still keen on landing the hot prospect. Bonatini is highly rated throughout Brazil and Cruzeiro are fighting to keep him.
Bonatini is yet to agree to a contact extension however and could leave the club in December for free. Manchester City are well aware of the Brazilian's progress but its being suggested that Juventus are keen on the youngster and are considering a contract of their own.