PM's ally will work as a Cabinet Office minister under Michael Gove on how to "maximise the opportunities of Brexit".
Ambassadors from the 27 member states were briefed on the contents of the post-Brexit trade deal on Christmas Day.
Ursula von der Leyen's words came after the UK and EU reached a Brexit trade agreement.
The EU has said there are "just a few hours" left for an agreement to be reached.
But EU’s Michel Barnier says talks are in the “final stretch” after “good progress” this week.
Boris Johnson’s official spokesperson says no deal is now simply a “potential” and “possible” outcome, a day after the PM said it was the “most likely”.
Veteran backbencher says the prime minister's position would be "untenable".
The PM talks tough, so why are the two sides still talking?
Snap of PM and David Frost alongside immaculately dressed Michel Barnier and Ursula von de Leyen has been brutally mocked.
As if compromise wasn't hard enough to swallow.