a future relationship agreement between the European union and the UK can only be concluded once the United Kingdom has withdrawn from the EU.
there may be a transitional deal for after 2019 to ensure that custom controls and barriers on trade are not enforced on day one of Brexit, but that these arrangements should not exceed three years and will be limited in scope as they can never be a substitute for union membership.
the European court of justice will be responsible for settling any legal challenges during the transition period.
the UK will be able to revoke its notification of article 50 but this must be subject to conditions set by all EU-27 so they cannot be used as a procedural device or abused in an attempt to improve the actual terms of the United Kingdoms membership.
should Britain seek to negotiate any free trade deals with other countries while it is still an EU member state, there will be no future discussion of a deal with the union.
there will be no special deal for the City of London providing UK-based undertakings preferential access to the single market and, or the customs union.
the cut-off date after which EU nationals coming to the UK lose the automatic right to residency in the UK must not be before 29 March 2019, when the country leaves the EU, or the British government will be breaking EU law.
Britain should pay all its liabilities arising from outstanding commitments as well as make provision for off-balance sheet items, contingent liabilities and other financial costs that arise directly as a result of its withdrawal.
the outcome of the negotiations on the future EU-UK relationship cannot involve any trade-off between internal and external security including defence cooperation, on the one hand, and the future economic relationship, on the other hand.
). It would probably be "you can stay in the EU after all, but forget about some of your special privileges". (a hard sell to leavers, but maybe things will be different in two years).