Aram... Brexit talks have been turbulent in recent months....
The thinking here is: if the United Kingdom cabinet or certain European Union member states strongly object to specific parts of the draft document (as long as they don't rip up the whole thing), then negotiators can go back to the drawing board.
He said the deal was a "failure to deliver on Brexit" and made it hard to "trust anything that comes out of Downing Street" again.
The text of the agreement, which runs to hundreds of pages, has not been released, but U.K. Prime Minister Theresa May is already busy trying to sell the agreement to Cabinet members in private meetings this evening at London's 10 Downing Street.
A Brexit deal has been reached by negotiators in Brussels and will be the focus of a crunch Cabinet meeting on Wednesday.
He added: "We object to that on constitutional grounds that our laws would be made in Brussels, not in Westminster or Belfast".
"We will look at the details of what has been agreed when they are available".
The news saw the British pound shoot up in value to 1.304 dollars from 1.285 on Tuesday at 2200 GMT.
If British ministers back the text, which runs to hundreds of pages, London hopes the European Union will call a summit later this month so the bloc's leaders can give their approval.
At an emergency cabinet meeting, Theresa May hopes to persuade her cabinet to fall behind her so she can get the text signed off.
May faces substantial opposition to her strategy in the House of Commons, which must approve the agreement before Brexit on March 29.More news: Leading rugby referee says TMO call against England was incorrect
More news: Four charged over suspected French president attack plot
More news: Mahomes sets Chiefs single-season passing TD mark
"We also discussed a number of issues related to our no-deal planning".
According to the Financial Times, the E.U.'s Chief Negotiator Michel Barnier has said a Brexit treaty "is nearly ready".
Former foreign secretary Boris Johnson said he would vote against the deal, claiming it was "vassal state stuff" and urged the Cabinet to "chuck it out".
Brussels diplomatic sources had said they feared any delay in agreeing the text would increase the chances of rejection by May's ministers or the British parliament.
But May, an initial opponent of Brexit who won the top job in the turmoil that followed the referendum, has struggled to untangle almost 46 years of European Union membership without damaging commerce or upsetting the lawmakers who will ultimately decide the fate of the divorce accord.
Jeremy Corbyn's Brexit spokesman Sir Keir Starmer said "technically" the whole Briext process can be stopped.
Highlighting the risks that remain, just hours before the announcement from London, EU officials published a contingency plan for a "no-deal" Brexit.
"How can you ask the party to vote for something which you yourself as prime minister and the Cabinet said they would never ever allow?"
May's cabinet also received an update on Britain's preparedness, as it has for several weeks now.
Meanwhile other political leaders in Northern Ireland have given a cautious welcome to a draft deal being agreed.
That will come in the form of a temporary UK-wide customs arrangement, with specific provisions for Northern Ireland which go deeper on the issue of customs and alignment with the rules of the single market than for the rest of the United Kingdom.