The German government has denied reports Chancellor Angela Merkel suggested the EU could offer extra concessions - including a time limit on the backstop - if British Prime Minister's Brexit deal is voted down in Westminister.
The Sun reported that Mrs Merkel suggested that the EU could offer more concessions if, as expected, the Withdrawal Agreement fails to get through the House of Commons.
The report said this could include persuading Taoiseach Leo Varadkar to agree an end date to the backstop to avoid a hard border in Ireland.
According to the Bloomberg news agency the German government has denied the report.
On Twitter its political correspondent in Berlin, Patrick Donahue, quoted a German government spokeperson as saying: "The Chancellor in no way offered guarantees beyond what was discussed at the December European Council".
There was also said to be no guarantees beyond what was contained in Tuesday's letter from Donald Tusk and Jean Claude Juncker.