That's the idea being bandied around
Bruno Waterfield reports
"An diplomat working on the new EU assurances said 'you could put an aspirational end date into a political declaration' to the backstop," the report says.
There's just no way that would get through parliament. It's derisory.
This might work a bit better:
"Also said independent arbitration panel set up to police disputes after the transition period is over could set an end date if EU was clearly not honouring best endeavours commitment in A184 of withdrawal treaty," Waterfield writes.