Rugby Football Union chief executive Francis Baron has warned England's hopes of defending the World Cup will be jeopardised unless a peace agreement can be struck to end the civil war with Premier Rugby Limited.
The RFU and PRL, the umbrella body for the 12 Guinness Premiership clubs, are locked in a bitter powerstruggle over the divisive issue of elite player management, who controls the England stars and when.
An interim agreement has been reached for training days covering the autumn internationals but nothing is in place beyond November 30, which means England head coach Andy Robinson cannot plan for either the Six Nations or the forthcoming World Cup.
Baron warned Premier Rugby any further delay will directly affect England's chances of success at France 2007.
" In planning terms, we are in the 11th hour," said Baron. "It takes two years to develop a successful team - we only have two years left.
" If we don't reach an agreement in the next couple of weeks, we are putting in jeopardy our ability to compete to a level the country expects of us at the World Cup.
"We need every month to properly prepare a team and do everything else that is needed for a successful campaign.
"We are very keen to negotiate a package that works for everybody. We see this as the best way forward. We are aiming to reach an agreement by the end of November.
"The clubs are as passionate as we are for England to do well. We believe the clubs want to support Andy Robinson in the next World Cup, so I remain optimistic we will thrash out a deal."
While the RFU are anxious for an agreement so they can plan for the World Cup, it is equally important to them the wound is properly addressed and not simply plastered over.
The two organisations exchanged proposal documents last week, which led to accusations the RFU are out to impose central contracts and buy controlling stakes in Premiership clubs.
Baron rejected both suggestions as "selective and distorted leaks" and outlined the nine proposals the RFU have made to kick-start further negotiations.
Twickenham is willing to plough more money into the club game but Baron insisted any investment would "not be a controlling share and we would remain at arm's length".
He added: "This is meant to be a helping hand. We have no intention of selectively investing in clubs."
The RFU have also proposed a £20 million stadia development fund to help Premiership clubs expand their grounds but they want "certainty of return" for their investments, and that means blocked access to international players for five weeks over the autumn and eight weeks over the Six Nations.
During those periods, the elite players - a group reduced from 60 to 30 - would be under the sole control of the England coaches. For the rest of the season, the players would return to their clubs and the RFU suggest "tripartite contracts" be drawn up between club, player and country.
The financial burden of covering the player against injury would be carried by the RFU, who would pay the wages with "clubs only contributing for matches played".
The RFU stressed these differ from the kind of central contracts the England cricket team have, because Robinson would hold no authority over the players once they returned to the clubs.
Blocking off the season was originally PRL's idea but the RFU "bought into it" and would also bear the cost of increased Premiership squads to help clubs cover the four extra matches when the England players are unavailable.
"These ideas are on the table and not all of them will form part of the final solution but we need certainty for clubs, players and England," said Baron."