Carlisle United's owners insist they are "rolling the dice" for a final time in a bid to resolve the billionaire investment saga.
The United hierarchy claimed it would be a last attempt to clear up the controversial situation.
Chairman Andrew Jenkins said directors, including the Carlisle United Official Supporters' Club, had agreed to write a letter after receiving correspondence from the mystery individual's agent.
"Things haven't moved since May when we went to see the agent," Jenkins said.
"But we have had a letter from the agent to say the interest was still live, [but] after what has happened over the last year and months, we have to be realistic about whether anything will come of this interest.
Fellow owner John Nixon insisted there was "nothing to gain" by revealing the investor's name even now.
"Up to press it's been disappointing," he said. "It's been done with the best intent and could still come to fruition.
"But it's always a long shot. Now it is one last roll of the dice."
Chief executive Nigel Clibbens said the letter would set out a timescale and emphasise the need for matters to be resolved before United's first home league game against Plymouth on August 13.
United issued a statement on the subject on their website midway through the forum.
Nixon, meanwhile, said United were likely to drop their current Project Blue Yonder stadium plans when a lock-out agreement with a developer runs out.
He said an update last month showed little progress was being made. "I would be surprised if, when we get to the end of October, there's any extension," said the former managing director.
Nixon said the fact the proposed site had flooded in December made a new stadium there less likely. He did not name it but said it was "a very short walk from transport hubs and the city centre".
Nixon was heckled by some fans when he began one answer on his Football League commitments and CUOSC's board status by saying: "I don't tell lies."
He went on to say CUOSC's wish for a seat on United's holding company was still subject to "negotiation" and that the club's existing shareholder agreements had to be respected.
Jenkins was also accused by one fan of "waffling" when repeatedly urged to stress Carlisle's target next season was promotion, while fellow director Steven Pattison was barracked for apparently telling fans "not to come back" and arguing with supporters on Twitter, during a discussion about fan engagement.
"If you're picking fights, you're picking on the wrong man," said Pattison in a stormy exchange before the forum closed.
Earlier Pattison had used the forum to launch a thinly-veiled attack on businessman Andrew Lapping, whose investment plan was dropped by United last year.
Pattison said that when a confidentiality agreement expires in about six weeks' time there would be "some interesting correspondence which will show what [Lapping] was."
Pattison also claimed the "Keith" who was named in text message screenshots on his Twitter account last year - criticising Lapping, directors and the media - was the former Gretna managing Keith Agar.
Nixon, meanwhile, said the club were hoping to repay up to £150,000 from the club's debts this year, and both he and Jenkins want to convert their loans to shares in the club rather than take money back when new investment comes in.
Clibbens pledged that the club would hold more forums, with tonight's attended by about 50 people in the Sunset Suite.