Ibrahimovic stunned Milan last week when declaring he was growing "tired of football".
However, Galliani has told the Gazzetta dello Sport that he's undaunted by Ibra's quotes.
"Zlatan is very serene," the official stated. "We even smiled a little when we read how his interview was interpreted.
"There was no sign of rejection towards Milan at all.
"In fact, I'm sure that he'll throw himself back into his work with the grit that we all recognise he has.
"Let's all stay calm, because he will be the one to reload Milan."