However, the Rossoneri official admits that the Brazilian forward wants to return to his old club Santos sometime in the future.
"Robinho is feeling very good at Milan," Galliani told Domenica Sportiva.
"He turned down a number of Brazilian teams because Santos are the only option for him if he returns to Brazil.
"However, Santos did not reach an agreement with Milan and with the player for several reasons. And we are happy to have him with us."
Robinho has been at Milan since 2010.