Ireland centre Stuart McCloskey revealed he had considered retiring from international rugby as he savoured the special memory of making a World Cup debut in front of his newborn son.

McCloskey came off the bench to replace the injured Mack Hansen in the first half of Saturday evening’s 36-14 win over Scotland in Paris to help his country set up a quarter-final clash with New Zealand.

The 31-year-old Ulster player has endured a stop-start Test career and been forced to wait for opportunities behind Bundee Aki, Garry Ringrose and Robbie Henshaw.

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With Henshaw sidelined and Hansen needing to be withdrawn, he finally made his first appearance in France, an occasion made even more memorable by the presence of 11-day-old Kasper, who was carried on to the Stade de France pitch at full-time.

“I’d say you’ll look at those pictures in 20-odd years and it will be pretty cool,” said McCloskey, who required special permission to return home for the birth. “He was fast asleep, he seemed all right

“I got home last Monday and my wife gave birth on the Tuesday. It worked out really well and then I was obviously back into the camp at the end of the week, and it was an unfortunate injury to get me in, but it’s been a brilliant week.”

McCloskey made his Ireland debut in 2016 but his cameo against the Scots was only his 15th cap.

Speaking of having to bide his time for opportunities, he said: “It was frustrating and it wasn’t.

“I always look back to what it was before last summer and I wasn’t involved at all and I was thinking about calling it a day with Ireland stuff and I came back in, played a load of games and finally became a part of the team I thought, so it’s nice.

“My goal was to get to a World Cup and I made that and whatever happens from now I’m fine with it.

“I know if you put me on the field I will perform well, but if it doesn’t happen, it doesn’t happen. I’m not going to sit in the shadows and be angry about it.”

Ireland centre Robbie Henshaw is expected to be unavailable until at least the semi-finals of the Rugby World Cup due to a hamstring injury.

The Leinster centre sustained the issue in training this week, ruling him out of Saturday evening’s pivotal Pool B clash with Scotland in Paris.

Ireland will monitor Henshaw’s fitness for the time being but head coach Andy Farrell is weighing up his options and could eventually make a change to his 33-man squad.

“He pulled up with a hamstring unfortunately at the end of the session on Tuesday and the diagnosis with hamstrings, they want to see how things settle down,” said Farrell.

“It probably takes about five days for that type of thing to happen but it looks like it could be a minimum of a couple of weeks at this stage.”

Asked if Henshaw will remain in France, Farrell replied: “Obviously, we’ll assess that as we go.

“Certainly he’ll be around rehabbing and we’ll see how the weekend goes with other injuries, etc, and assess how Robbie’s going along the way also.”

Ulster’s Stuart McCloskey has taken Henshaw’s place among the replacements for this weekend’s Stade de France showdown, while hooker Dan Sheehan and lock Iain Henderson have been selected ahead of benched pair Ronan Kelleher and James Ryan.

Vice-captain Ryan suffered a wrist injury in Ireland’s 13-8 success over South Africa a fortnight ago.

Farrell insists the Leinster second row is fully fit and has trained well, including coming close to flattening captain Johnny Sexton on more than one occasion.

“He’s fit,” Farrell said of Ryan.

“He had a bit of a niggle on a wrist but that’s fine and he trained the house down, actually trained the best I’ve seen him train in a good amount of years yesterday.

“He actually nearly took Johnny’s head off three or four times so he’s fit and raring to go, there’s no doubt.”

Ireland will progress to the knockout stages with a win or draw, while a defeat will leave them reliant on Scotland’s margin of victory and bonus points gained.

Farrell suggested the recalled Henderson, who came off the bench in the victories over Romania, Tonga and the Springboks, could be handy in calculating the permutations.

“We want to win,” said Farrell. “It’s a massive game. It’s so important to us and certainly obviously to them.

“But to the travelling fans and the people back home it’s a huge game.

“We have Iain Henderson in our group who is good at maths, so we’re across everything as far as that’s concerned.

“But the easiest way is to make sure that we perform well and deserve to win the game outright.”

Skipper Sexton will start for the fourth successive match following his return from injury and suspension at the beginning of the tournament, while flanker Peter O’Mahony will win his 100th Ireland cap.

“It is a knockout game,” said 38-year-old fly-half Sexton.

“We’ve viewed it as a last 16, we’ve spoken about it and that’s why it’s important we got our preparation right.

“We need to go out and get our performance right now.”