According to the Finnish Prime Minister, Boris Johnson has 12 days to present his plans for a Brexit vis-à-vis the EU.
Antti Rinne said that he and French President Emmanuel Macron had agreed that the United Kingdom would have to submit the proposals in writing by the end of September.
Finland currently holds the rotating Presidency of the EU.  A source from Downing Street said, "We will continue to negotiate and make proposals in due course."
Mr Johnson said agreement on a crucial EU leaders summit on 17 October was possible, but insisted on a Brexit. This will happen by 31 October, even if no agreement has been reached.
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The British government has talks with The EU has made progress since Mr Johnson ranked 10th in July has entered.
It was said that it had made "a number of proposals" as an alternative to the Irish border stop – the policy aimed at preventing the return of a hard border on the island of Ireland, and a focal point in the Brexit of former Prime Minister Theresa May deal.
But Mr. Johnson has repeatedly refused to disclose details of the proposals in interviews because he did not want to negotiate publicly.
The EU has continued to criticize the United Kingdom for failing to submit written plans.
Earlier, European Commission President Jean-Claude Juncker had described a meeting with Mr Johnson on Monday as "constructive".  But he said until proposals had been made: "I will not be able to tell you that any real progress has been made by looking you straight in the eye."
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Mr Rinne spoke with reporters on Wednesday after a meeting with the French President in Paris.
He said, "We agreed that it is now time for Boris Johnson to produce his work in writing – if available.
" If no proposals are received by the end of September, it's over. " The Finnish Prime Minister intends to discuss the new deadline with the President of the European Council, Donald, Tusk and Mr. Johnson in the coming days, but the position has not been agreed with other EU states.
"A fundamental another agreement "
Jacob Rees-Mogg, Chairman of the Government, insisted that the Prime Minister was on his way to adopt a" fundamentally different "Brexit agreement to ensure that the United Kingdom left on 31 October.
To achieve such a result, the government must "listen very carefully to what the DUP says."
On Wednesday, DUP leader Arlene Foster told Dublin executives that she wanted a solution to Brexit that would not affect the constitutional position of Northern Ireland.
Ms. Foster – whose support has recently given the Conservatives a majority in parliament – said a Brexit deal "that will require a back-down – be it across the UK or Northern Ireland – will not be achieved."
The entire UK had to leave the Customs Union and the Internal Market, she said.
However, she added that the DUP was ready to "investigate the specific solutions for Northern Ireland achieved with the support and consent of the Northern Irish people".
It comes when the legal dispute over the suspension of the British Parliament is due to take place on the third day before the Supreme Court.
The British Government argues that the decision to extend the parliament is a political matter and not a matter for the parliament. Emagazine.credit-suisse.com/app/art…1007 & lang = DE However, the campaigners said the step was used "to an inappropriate purpose" to prevent the deputies to review Mr. Johnson's plans in the run-up to Brexit on October 31. The PM had called the House earlier this month for five weeks on the pretext that MEPs should not return until 14 October.
Mr. Rees-Mogg, who had traveled to Balmoral to seek the Queen's approval of the move, said it was "nonsense" to suggest this she was misled about the decision.