Leave-supporting MP Paul Scully has declared his support for the Graham Brady amendment, and urged the hardline European Research Group to back it.
Chair of the ERG, Jacob Rees-Mogg, has reportedly endorsed another plan known as the Malthouse compromise - an alternative action plan set out by housing minister Kit Malthouse, which suggests a new backstop arrangement with no hard border in Northern Ireland.
Graham Brady, chair of the backbench 1922 Committee, has tabled an amendment that seeks to replace the backstop with “alternative arrangements”.
- Read more: Brexit deal amendments: What are MPs voting on?
- Read more: Pro-Brexit protesters descend on Westminster ahead of Commons vote
Reports suggest the ERG are considering backing Brady's plan, but the EU is said to have prepared a statement saying they will not allow any renegotiations.
“Jacob [Rees-Mogg] has been working with a number of other members of the conservative party on a compromise, it’s become known as the Malthouse compromise, so I think Kit Malthouse will be very pleased with himself,” Mr Scully, the Conservative vice-chair for the London region, told Matthew Wright on talkRADIO.
Bloomberg's Ian Wishart tweets that the EU will reject the Brady amendment
“He’s going to go down in history as one of the good boys of Brexit. It’s a plan C. You have people like Nicky Morgan and Jacob Rees-Mogg all starting to get interested around this compromise, which is good.”
Bringing the Malthouse compromise to fruition, he said, rests on the Brady amendment getting through parliament.
“If it’s viable, if it’s a goer, it can be done under the Brady amendment.
“I don’t know whether the Malthouse compromise is going to see the light of day, but whatever we do, we’ve got to get the Graham Brady amendment through,” he said.
“It’s to negotiate a better backstop, either with a sunset clause or something like that, that gets us out of the situation.”
Cooper amendment 'stopping Brexit'
As for the amendment tabled by Yvette Cooper and supported by Tory MP Nick Boles, Mr Scully said it was an attempt to stall Brexit.
The amendment seeks to give MPs a vote on whether to extend Article 50 until the end of the year.
“I think if you start kicking this down the road… you’re way along the way of stopping Brexit entirely,” he said.
- Read more: Steve McCabe MP: 'We need a compromise that gets us out of the EU without damaging people's lives'
“Everyone that’s been pushing for a second referendum or to extend Article 50 essentially does not want to leave the EU.
“I think this is why Jacob, [former Brexit minister and ERG deputy chair] Steve Baker and these people are starting to question which direction we go - they can see if their [Cooper and Boles] amendment goes through and the Graham Brady amendment doesn’t go through, we are seriously at risk of unpicking the whole thing and not leaving the EU.
“The last two years of division and uncertainty would have been a waste of time.”