Michel Barnier: There are three options: a deal based on the agreement finalized six months ago; withdrawal without a deal; or no Brexit. It will have to be the choice of the UK. During the last three years, we have delivered what the UK wants: leaving the EU, leaving the single market, leaving the customs union [after the Irish “backstop” is resolved]. Even if we regret their decision profoundly, it is their sovereign decision and we have to respect it. But if the UK wants to leave in an orderly manner, this treaty is the only option.
Source : ‘Nostalgia Serves No Purpose’: An Interview with Michel Barnier