Ryanair looks set to vote against the re-election of trade union leader David Begg to the board of Aer Lingus at the airline's AGM in a month's time.
Sources with knowledge of the matter told the Irish Independent that Ryanair will use its voting stake to try and oust Begg from the Aer Lingus board of directors.
Begg, who is the general secretary of the Irish Congress of Trade Unions, has been on Aer Lingus' board since 2008.
At last year's AGM, 45.8% of investors voted against the re-election of Begg to the board, with Ryanair leading the way with its 29% stake.
The Irish State currently holds a 25% stake in Are Lingus, which is valued at €900 million. Begg also sits on the Executive Committee of the European Trade Union Confederation (ETUC), the Central Bank and he is a governor of the Irish Times Trust.