5. While an agreement on a future relationship between the Union and the United Kingdom as such can only be finalised and concluded once the United Kingdom has become a third country, Article 50 TEU requires to take account of the framework for its future relationship with the Union in the arrangements for withdrawal. To this end, an overall understanding on the framework for the future relationship should be identified during a second phase of the negotiations under Article 50 TEU. We stand ready to engage in preliminary and preparatory discussions to this end in the context of negotiations under Article 50 TEU, as soon as the European Council decides that sufficient progress has been made in the first phase towards reaching a satisfactory agreement on the arrangements for an orderly withdrawal.