The Italy international has long been linked with a return to Serie A despite president Silvio Berlusconi insisting the club will not sign the striker.
City manager Roberto Mancini has also insisted this week that Balotelli will stay with the Premier League champions, and Galliani says a move is unlikely.
“Kaka and Drogba are 101% not coming to Milan. Balotelli? He is 99.9%...” Galliani said.
“Abate and Antonini are staying. Their agent was in Russia to see through Salvatore Bocchetti’s transfer to Spartak Moscow, that is all.”