Hailing Ferguson's achievements at Old Trafford as phenomenal, Gill said: "We never discuss it (retirement). It came up a few years ago, when he decided to retire, but thankfully he reversed that decision.
"He is on a 12-month rolling contract and we are very happy with that. But retirement never comes up in our conversations."
He added: "He has been here for over 21 years now. He has built many teams in that time and we have had that stability throughout the club as a whole.
"Ten titles is phenomenal and hopefully there are more to be won."