US Edition Fans' group Manchester United Supporters' Trust (MUST) say the "clock is ticking" on the Glazer family's ownership of United and that a similar outcome to Liverpool could arise but that is denied by the club's senior executive.
Gill told Press Association Sport: "I can't speak for any other club but the United fans should not be concerned.
"We have a long-term financing structure in place, excellent revenues that are growing, we are controlling our costs - total wages are 46% of turnover - and we can afford the interest on our long-term finance.
"In our opinion if something changed in the ownership this club will survive and continue - it is covering the financing cost more than adequately.
"We still have cash to invest in players and to give good contracts to players and we are comfortable with the business model."