Sonny Bill Williams could undergo surgery on a knee injury next week.
Williams was a notable absentee from the Wolfpack squad that defeated Huddersfield on Wednesday night, in what was their first win of the year.
SBW has been nursing a knee problem for several weeks but may now go under the knife to sort the issue out.
“Sonny Bill has a bit of a sore knee, we may have a look at having that operated on,’ Brian McDermott said.
“It’s just a bit grumbly, he might go get checked out Saturday. Fingers crossed, by all accounts, it’s going to be a ten-day to two-week recovery at worst.”