Ireland are "not too concerned" by their depth at out-half in the wake of Joey Carbery's broken wrist, according to coach Greg Feek.
Leinster pivot Carbery trudged out of a much-changed Ireland side's 23-20 win over Fiji on Saturday with a fractured wrist and could now be sidelined for two months.
British and Irish Lions star Johnny Sexton will return to spearhead Saturday's Dublin clash with Argentina, with Munster's Ian Keatley expected to deputise from the bench.
Paddy Jackson's extended absence due to legal proceedings, Ian Madigan's commitments at Bristol and Carbery's injury have all thinned Ireland's options at 10 - but scrum coach Feek insisted Ireland's bosses remain relaxed about the status quo.
"I suppose, for us we have to just look at that situation, so that when people come to an environment we back them to understand how we play the game," said Feek.
"And if we're developing players in that position or if we have someone come in, we want to make them feel as comfortable as they can.
"Whoever that person is, if they do what is required and can do that with composure then hopefully the rest of the game can fit around that.
"We try not to get too stressed about that. There are always situations in different positions on the pitch where if you lose a couple of players then there could be trouble.
"It's difficult to have depth in every position that's world-class anyway.
"We're lucky we have really good players who can slot in to that position, and we'll see what happens going forward. But at the moment we're not too concerned about it."
Lions Test star Tadhg Furlong was just a rookie when Ireland last faced Argentina, in the 40-23 World Cup quarter-final defeat in 2015.
Now the 25-year-old tighthead is viewed as a senior man in head coach Joe Schmidt's set-up, after just 18 Ireland and three Lions Test appearances.
Feek hailed the Wexford native's infectious appetite for learning that has helped him rocket through the Test match ranks.
"He's just got so much energy; he can run all day, talk all day, and that's one thing that's contagious when he's in there," said Feek.
"He loves seeing his team-mates do something really well, one of the first to go over to say well done.
"He thinks deeply too about the game, he's very astute in that respect, and he wants to get things right on the pitch. And he's still got the hunger to learn.
"It's the excitement he has to keep being able to do more, learn and ask for feedback. The really top players are not afraid to get a bit of feedback if they think it will help them get better.
"Some players can get a bit defensive, but Tadhg would just soak it up."