It's the latest step in the airline group's bid to take over the company, and comes after a series of union and political comment about the future of the offer.
ICTU says it's surprised by one union representative's claim that workers were 'warming' to the offer.
And despite comments from Pat Rabbitte at the weekend, Labour leader Joan Burton's office says there's been no change in their party's position, and they still have concerns about jobs and connectivity.
