Sealing Brexit deal 'very difficult' - Barnier

Boris Johnson faces revolt from within his own cabinet

That's according to a report from the UK's Times newspaper.

A source said five cabinet members could quit if the British Prime Minister heads for no-deal on October 31st - when Britain is due to leave the EU.

Johnson has said he wants a deal - but he's running out of time to get it done.

The EU's chief negotiator Michel Barnier said a deal would be 'very difficult' to achieve by next week's EU summit, but he did say it is still 'possible'.

(SOUNDBITE) (French) EU CHIEF NEGOTIATOR, MICHEL BARNIER, SAYING:

"To put things simply and very frankly and to try and be objective. At this particular moment, we are not really in a position where we are able to find an agreement."

Both sides say they don't want a hard border in Northern Ireland.

But they can't agree on how long a so-called backstop - keeping Northern Ireland closely aligned to EU regulations - should stay in place.

(SOUNDBITE)(English) IRISH PRIME MINISTER LEO VARADKAR, SAYING:

"We are willing to work hard to get a deal. We'll work until the last moment to get a deal, but certainly not at any cost and we are absolutely open to proposals that would take into account the democratic wishes and the views of the people of Northern Ireland in relation to consent and in relation to democracy, but we need to make sure that any such arrangements are workable."

Britain's Brexit Minister Steve Barclay meets Michel Barnier on Thursday.

One unnamed EU diplomat said the meeting is designed to see whether there is any flexibility on 'the UK side' to head for a deal.