The Italy striker is again winning back Milan fans after rediscovering his scoring touch and Galliani said: "No, we've never considered selling him.
"When he was having a tough time, we were delighted by his behaviour. He came into our office, we talked and mutually agreed to continue this relationship."
Galliani added: "He scored many goals for Parma, but only from November onwards. Milan must find a way of getting Gilardino to start scoring in September. It's a challenge for all of us."