EU sources close to the negotiations have told me they believe the UK has only two weeks left to make progress on the Brexit divorce issues.
Otherwise, I've been told, EU leaders are extremely unlikely to vote at their December summit to widen talks to include trade and transition deals - as the UK so dearly wants.
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And why are there only two weeks left for the UK to move on the money, according to the EU?
Because that is when the 27 EU capitals start discussing the draft conclusions to the leaders' summit which takes place mid-December. They need those two weeks to more or less agree a position.
"And there's no way they'll agree to talk trade or transition with the UK in December, if the money issue hasn't been put to bed beforehand. Forget it," a high-level contact told me.
"Then the Brexit situation becomes dramatic."
Because if the December summit comes and goes, the earliest talks of a future EU-UK relationship could start would be at the next EU leaders summit in March 2018.
Far too late for businesses on both sides of the Channel which are desperate for some clarity.
March 2018 would also be one year after the UK triggered Article 50 - the formal process to leave the EU.
And it's six months from the time the EU wants to formally close Brexit negotiations in order to be able to vote on any agreement reached.
"All I know," a source close to the negotiations told me, "is that I don't know the UK as I thought I did."
"Are they so clouded by sex scandals and losing ministers in Westminster that they don't see: Brexit time is running out?
"They want a deal. Fine. Then now's the time to rip off the Band Aid. To admit to the UK public and the Conservative Party: 'We want to leave and it's time to pay'."
The EU wants a deal, too. Very much so. But the mantra "No deal is better than a bad deal" also rings true this side of the Channel.
http://www.bbc.co.uk/news/world-europe-41923765