The 20-year-old has recently been linked with a move away from City, as reports claim the youngster is homesick.
Mancini told The Sun: “He will definitely stay. Mario is an ongoing bet.
“He has shown he has all the right qualities, but needs to do more, much more, to give a sense to his talent.”
Balotelli joined City in a £24million deal from Inter Milan last August.
