Real Madrid are believed to be interested in signing the Unnited winger but Gill insisted that he will be going nowhere.
"There's no chance of us selling him, no way, whatever the bid," he said.
"Cristiano signed a new contract last season to 2012 and we are not a selling club.
"Alex Ferguson has never let a player go he didn't want to.
"He is happy here. Alex knows Ronaldo's mind and what he's about. Everything about him is Manchester United."