The European Union says there could be a short no-deal period in January - even if a Brexit trade deal is reached.
The EU's chief negotiator, Michel Barnier, updated member states this morning, as talks continue with the UK.
A short extension of the transition period, possibly lasting two or three months, was another option discussed.
Both sides are running out of time to implement a deal by December 31st - with fisheries and the level playing field the sticking points to a deal being reached.
The next few days are important, if a 🇪🇺🇬🇧 is to be in place on 1 January 2021.
Fair competition, and a sustainable solution for our fishermen and women, are key to reaching a deal. [2/2]— Michel Barnier (@MichelBarnier) December 14, 2020
Mr Barnier has also said it is the EU's responsibility to give the talks every chance of success.
He says there has never been such a comprehensive agreement negotiated in such little time.
