British ministers will not sign off on a deal with Brussels over the Northern Ireland Protocol until the DUP's concerns are addressed, Britain's Foreign Secretary James Cleverly has indicated.
British Prime Minister Rishi Sunak is closing in on announcing a new post-Brexit deal after holding a "positive" call with the EU's Ursula von der Leyen ahead of an expected meeting.
Mr Sunak and the European Commission president are likely to hold in-person talks on the Northern Ireland Protocol this weekend, sources told the PA news agency.
Securing a deal would set up a possible clash with Conservative Brexit hardliners, with Tory MPs being ordered to be in Parliament on a three-line whip on Monday, meaning they must be in the Commons.
British Cabinet ministers have also been put on alert for a possible conference call over the weekend, according to The Times.
Mr Sunak has promised MPs a say over his deal, which he hopes will get the DUP to restore power-sharing in Northern Ireland.
But it remains unclear whether the Prime Minister will give them an explicit vote on the agreement, amid fears there could be a rebellion from hardline Brexiteers.
A deal had been hoped for this week but Downing Street said that "intensive discussions" with the EU were ongoing.
Unusually, Downing Street declined to set out Mr Sunak's plans for the weekend, only saying that he was working in No 10 on Friday.
"I haven't seen the final details of his diary for the weekend," a Downing Street spokesman said.
Explained: What is the Northern Ireland Protocol
The protocol - signed by then prime minister Boris Johnson in 2020 - was a compromise designed to prevent a hard border with checks on goods crossing from Northern Ireland into the Republic of Ireland and the EU's single market.
But unionists have been incensed by the trade barriers it has created between Northern Ireland and the rest of the United Kingdom.
Mr Cleverly told Times Radio: "The things they're concerned about, the things we're concerned about, are absolutely in alignment and we are focused on resolving all the issues that need resolving.
"Some of them are technical trade issues and very complicated and some of them are really simple but important principles, like Northern Ireland's place as an integral part of the United Kingdom. And that sense of sovereignty, the importance of a democratic voice.
"So when, hopefully, we get those issues resolved then I would hope that the DUP would recognise that we've addressed their concerns and until we have addressed those concerns we're not going to sign off on the deal."
The DUP has issued seven tests to win its backing for any deal, including addressing what it calls the "democratic deficit" meaning the nation is subject to EU rules.
Meanwhile, Mr Johnson declined to say whether he would back any new deal negotiated by his successor Mr Sunak in the latest sign he could face a rebellion on the Tory backbenches.
Instead, the former prime minister backed as the best solution his Northern Ireland Protocol Bill, which could effectively rip up parts of the agreement he brokered.
Mr Johnson told Sky News: "I think that it is important to wait to see what there may be but I think the best way forward, as I said when I was running the Government, is the Northern Ireland Bill, which cleared the Commons very comfortably, I think unamended, when I was in office and only a few months ago.
"So, I think that is the best way forward."
The Downing Street spokesman responded: "Negotiations are continuing so there isn't a finalised deal for people to take a judgment on."
