Carre has not played for his country since 2023 and was previously ineligible under the Welsh Rugby Union’s (WRU) selection policy because he has 20 caps, five short of the required number for those playing with clubs outside Wales.
But there are loopholes, as demonstrated when Wales selected Jarrod Evans in the Six Nations earlier this year.
The Harlequins fly-half has fewer than 25 caps but he was not given a reasonable offer to remain with former club Cardiff.
It seems the same applies to Carre, who left Cardiff last year to join Saracens for a second time.
Carre would have become available for the other home nations in 2026 because it will have been three years since he previously played for Wales.
Tandy says that situation did not contribute to his decision to recall the prop and he could place his faith in Carre, which would mean Nicky Smith being named on the bench.
“What is obvious is his [Carre’s] ability around the field, his attacking presence, his carrying ability and his turn of pace for a big man,” said Wales assistant coach Danny Wilson.
“Those have now been joined by, in the Premiership, his development at scrum time, where he’s been tested.
“He’s been a breath of fresh air since he’s been in camp. He’s been great to work with and I’m looking forward to seeing how he goes through this campaign.”
Carre is in line to pack down in the front row alongside Ospreys hooker Dewi Lake and Cardiff prop Keiron Assiratti.
Adam Beard and Dafydd Jenkins are expected to return in the second row after missing the summer tour of Japan.
After helping the British and Irish Lions win the series against Australia, Wales captain Jac Morgan is set to come into the back row alongside Cardiff flanker Alex Mann and Dragons number eight Aaron Wainwright.
The likes of Gloucester lock Freddie Thomas and Scarlets number eight Taine Plumtree could offer impetus from the replacements bench.
