A consortium that wants to help run Silverstone has called on the track's owners to join forces to help secure the future of the British GP.
The British GP has been placed on the provisional 2005 calendar
Brand Synergy, backed by ex-driver Nigel Mansell, says it has the cash to make sure the 2005 race, which only has a provisional date, goes ahead.
"It's a fully funded proposal the BRDC members should have a chance to see," consortium leader Kim Cockburn said.
"All we ask is that our proposal is considered seriously."
The plan will be submitted to the BRDC, who were unavailable for comment, early next week.
In it, Brand Synergy will propose creating a new company, in which they, the BRDC and an as yet un-named investment group each have a stake.
Cockburn says the un-named company will enable a billion pound redevelopment of the 300-acre Silverstone site that would provide income to secure the long-term future of the race and the circuit.
"The plan is to set up a new company of which the BRDC have a part," she told BBC Sport.
"We then masterplan the whole Silverstone site and we deliver restaurants, shops, hotels etc.
"It will turn Silverstone into a massive motor racing, leisure, entertainment destination right in the middle of England.
"We've listened to the BRDC and our new proposal will reflect those comments.
"We believe it is a serious document, well backed, well funded and we believe it a strong proposal that they should put to their members."
However, the BRDC may be unwilling to join forces with Brand Synergy while it still has the chance of going it alone and securing funding for a similar redevelopment proposal it has been negotiating with the East Midlands Development Company.
Without the extra income from such a development, the BRDC may struggle to meet the long-term financial demands of Ecclestone.
The two sides are currently at loggerheads over the terms of next year's race.
Ecclestone wants a one-year deal, with the following six up for re-negotiation.
That could mean further price hikes from the fee for the 2005 race which Ecclestone says he reduced to £7.4m from £8.9m after pressure from Sports Minister Richard Caborn.
The BRDC, which says £7.4m is the maximum it can pay just to break even, is reported to be seeking a two-year deal followed by talks on the following five years.
In theory the BRDC have until 10 December - when the sport's governing body meets to ratify the calendar - to sign a deal with Ecclestone.
But any uncertainty and delay beyond the end of October may have an adverse impact on the marketing and ticket sales for the event.
The 3 July date earmarked is the same day as the men's singles final of the Wimbledon tennis championships.