Ireland's EU Commissioner Phil Hogan will be appointed the EU’s chief trade negotiator tomorrow, RTÉ News understands.

Mr Hogan is expected to be formally appointed to the role of EU Trade Commissioner by the incoming Commission President Ursula Von Der Leyen.

EU sources have described the job as "one of the most important economic portfolios in the next commission, coming at a very important time for the EU and Ireland".

Mr Hogan, 59, was first appointed as EU agriculture commissioner by former taoiseach Enda Kenny and is taking up his second five-year term.

As commissioner, he has been a trenchant critic of British eurosceptics and his appointment as trade commissioner will send an important signal that the issue of the Irish border will remain a central component of any future EU-UK trade agreement.

Mr Hogan was renominated by Taoiseach Leo Varadkar as Ireland's commissioner in June.