Ireland boss Declan Kidney has admitted he would not hesitate to recall veteran fly-half Ronan O'Gara to face France.
The number 10 spot was not confirmed during Tuesday's team announcement, with Jonathan Sexton ruled out through injury and Paddy Jackson, who started in the defeat to Scotland, currently nursing a hamstring strain.
Jackson is expected to be fit for Saturday's game, but if not Ireland could turn to uncapped Leinster fly-half Ian Madigan, or O'Gara.
"Absolutely not would I mind asking Ronan back, I'd be delighted. There was no fun whatsoever in leaving him out," said Kidney.
"I'd only be too delighted. It wouldn't be an awkward conversation from my side, absolutely not.
"I'm sure he'd love to play for Ireland, he's always loved playing for Ireland and he'd continue to do that.
"Ronan will have been disappointed. You don't give the type of service that Ronan has given and not be disappointed.
"It's the role of the coach to make these calls and I felt Ian had been going well and deserved his chance.
"But it's unfair to put Ronan in that spotlight. Everybody is centrally contracted, so everyone is available to play for Ireland at any stage.
"We have 20 guys on standby. We'd call someone in when need be. Everyone is alerted."