Leeds chairman Ken Bates believes the club will find it hard to survive if creditors vote against his bid to buy back the Yorkshire side on Friday.
Bates is hoping to still be involved with Leeds
The former Chelsea chief took the debt-ridden club into administration ahead of the final weekend of season.
"If they want a football club in Leeds they should make sure they vote the right way," he told Yorkshire Radio.
Administrators KPMG agreed to sell the club back to Bates, but the deal has yet to approved by creditors.
The creditors, and the Football League, will consider a Company Voluntary Agreement under which they would forego some of Leeds' £35m debt.
Bates added: "If the CVA fails, I can assure the fans it's unlikely there will be a Leeds United Football Club. Remember Accrington took 45 years to get back to league status from when they went out of the league.
"Hopefully we can move forward and put the tribulations of the last five to six years behind us and start again with an open and even playing field so we can start getting the club back to where it belongs."
Meanwhile, Leeds businessman Simon Morris has also submitted plans for a £10m takeover while Duncan Revie, son of legendary former Leeds manager Don, has said that he is considering making an offer.
Taking Leeds into administration resulted in a statutory 10-point deduction for a club that had already been relegated to League One.