Thirty-one-year-old James Greenwood, experienced second line/support forward, and promising prospect, 22-year-old Amir Bourouh, will play for Minster City.
Bourouh, a hooker, will put on the boots of the usual number nine Josh Wood who has been ruled out for at least four weeks, his signing is a boost for the squad with Nathan Mossop also ruled out for the immediate future.
Bourouh came off the line at Wigan Warriors and spent time on loan at Halifax. He is highly respected at Salford and was awarded the number 21 shirt in the Red Devils team.
At Wigan he faced stiff opposition for the number nine shirt in Sam Powell and Brad O’Neill. He made eight appearances for Wigan before moving to Salford, where he appeared eight times.
Greenwood is a highly experienced campaigner who began his career in Wigan also playing for London, Workington, Hull KR and Salford Broncos.
At KR he played in 83 games scoring 19 tries while at Salford he appeared in 23 games crossing for six tries.
Crarey said ahead of the trip to York: “With Josh Wood and Nathan Mossop out, we needed an experienced nine to cover and Amir fits that role.
“Wood has been the backbone of our team and we miss him dearly.
Greenwood is an experienced player who has played almost a hundred games in the Super League. I felt like we only needed a couple to lift the team.
We just need to get that first win under our belt, but it’s still early days.
“We need a big upgrade across the park.
“It was another disappointing result last week, losing at Swinton (20-18) in the last minute.
“We had two tough games before last week, Toulouse and Sheffield, two really good teams, but I thought we could have gotten a result in Swinton.”
Crarey delays the naming of his last 17 but could be without skipper Jarrad Stack, who has a knee injury.
Ellis Gillam is ready to play despite having stitches from a head injury sustained at Swinton, however Sam Brooks is still ruled out.
The Knights, led by former Barrow player Andrew Henderson, fell 36-0 in Toulouse last weekend, with fewer than 11 players injured.