EU rules (Article 50) set out that once a member state has sent a notification that it wants to leave the EU, “the Union shall negotiate and conclude an agreement with that State, setting out the arrangements for its withdrawal”.
These arrangements are contained in the draft Withdrawal Agreement that the UK and EU have been negotiating. The draft Withdrawal Agreement is concerned entirely with terminating the UK’s membership, such as its financial obligations, the status of citizens in both the UK and the EU, and how the Irish border will continue to function. Discussions about future trading arrangements between the UK and EU are separate from the Withdrawal Agreement. The EU will not start negotiating that until after the UK has left the EU.View all facts