Ryder Cup 2022 director Gian Paolo Montali has warned Italy could lose the hosting rights for the tournament if they do not deliver €97 million (£84 million/$102 million) of guarantees in the next two weeks.
Although no official deadline has been given, Montali claims he is under "pressure" from countries such as England, Germany and Spain.
The Italian has defended his comments, insisting that suggestions he was issuing an ultimatum had been taken out of context.
A funding crisis plunged their hosting of the event, due to be held at the Marco Simone Golf and Country Club just outside of Rome, into doubt.
"I'm being hammered every day by the English, who are demanding a response," he said.
"There is also pressure from other countries, such as Germany and Spain, for the event to be taken off us.
"If we don't provide the guarantees requested within 15 days we will lose it.
"I do not mean to issue an ultimatum.
"The agencies have raised my phrase extrapolated from a broader context, but it does not change.
"We no longer have much time, we have to indicate the path we intend to follow."
In a statement, Ryder Cup Europe claimed they remained committed to holding the competition, one of golf's most famous events, in Italy, despite the issues over how the tournament will be financed.
An amendment to a Bill which would have provided €97 million of funding was blocked by Italian Senate President Pietro Grasso earlier this month.
"Our discussions with the Italian Golf Federation are confidential so there is nothing to say publicly at this time," a Ryder Cup Europe spokesperson said.
"However our common goal, of staging a successful Ryder Cup in Italy in 2022, remains."
Italian National Olympic Committee President Giovanni Malagò also remained calm on the situation and insisted the Government still supported of Italy staging the Ryder Cup for the first time.
"I know for sure that there is full willingness of the Government to find the instrument to pass guarantee, we are working," he said.
Rival parties, who opposed the Bill, claimed the Ryder Cup was a waste of resources, which could be spent on other priorities.
Rome’s bid for the 2024 Olympic Games faced similar opposition before it was withdrawn.
Italy was awarded the 2022 Ryder Cup in December 2015.
The country beat off competition from Austria, Germany and Spain to land the matchplay event which pits the United States against a team from Europe.
Dubbed as "golf's greatest team event", Europe has only hosted the Ryder Cup outside of the Great Britain and Ireland once, at the Club de Golf Valderrama in Spain in 1997.
France are due to stage the tournament at Le Golf National in 2018, a course near to capital Paris, which is bidding for the 2024 Olympics and Paralympics along with Los Angeles.