The Transport minister has demanded further concessions from IAG before he's prepared to sell Aer Lingus.
Paschal Donohoe says he wants more commitments on the future of the Heathrow slots, and on the number of jobs that could potentially be lost.
He says IAG's guarantee on the future of the Heathrow slots must be extended beyond five years - something the airline group has previously ruled out.
The government has also asked for more information on how many jobs would be lost if the airline is sold, and how quickly new jobs could be created to replace them.
Our political correspondent Gavan Reilly reports.