Talanoa, Fonua, Yeaman, Michaels IMO.

I honestly don't know!.
Yeamans defense could be needed against a physical Catalans team, but Carlos needs to be in somewhere.
Could Pryce be used off the bench again?.

I would play Pryce at stand off then a straight choice between Yeaman and Carlos at left centre. Tuli and Micheals on the wing.

I'd play pryce against his former club and yeaman needs to be in the centres as his defence is better than carlos. Then a decision on whether to carry a back on the bench but personally I'd go with 4 forwards