The Public Expenditure Minister Brendan Howlin has signalled that Eamon Gilmore is his choice to be Ireland's new EU Commissioner.
Fine Gael are understood to want Environment Minister Phil Hogan to take up the position, but Labour have been pushing the Tánaiste's case in recent weeks.
Mr Howlin says Mr Gilmore is one of a number of "outstanding candidates" for the position and emphasised his record as Minister for Foreign Affairs.
He says the Tánaiste would be a very capable Commissioner, saying he is "somebody who would have contacts across the European Union and who has also held the post of Foreign Minister.
He said: "He would know every senior player in Europe."