The 23-year-old did not feature in Milan's 3-0 pre-season friendly loss to Olympiacos in Toronto on Thursday with reports suggesting that the forward could be on his way out of the club in the coming weeks.
Balotelli’s rumoured destination is Premier League side Arsenal with Arsene Wenger having met with the striker’s agent, Mino Raiola, during the World Cup over a potential transfer.
Despite the talks having stalled, though, Galliani has insisted that Milan do not want to sell Balotelli to any club this summer.
"Balotelli never asked to be sold. He will stay at Milan. 100 per cent doesn't exist on the transfer market, but 99.9 per cent does," Galliani told reporters.
Galliani also commented on the future of Robinho, who has been tracked by several clubs including Santos, Cruzeiro, Atletico Mineiro and MLS outfit Orlando City.
The 30-year-old’s wage demands have proved a problem in finalising any move, but, Galliani is optimistic that the Brazilian will find a suitable club.
"There are some offers and more will arrive on Monday," he said. "We are convinced that we can find a solution."
Galliani confirmed that Torino midfielder Alessio Cerci and Arsenal forward Joel Campbell were on Filippo Inzaghi's wishlist this summer, but that the transfers would only go ahead once the futures of Balotelli and Robinho were sorted.
"Alessio Cerci and Campbell? They have the characteristics our coach likes, but so do many other players," he said.