Warrington full-back Stefan Ratchford will be sidelined for up to four weeks, Daryl Powell has confirmed.
Ratchford, 33, left the field through injury in their recent loss to Wakefield at the Halliwell Jones Stadium.
He was injured trying to prevent a second half try from Trinity forward Matty Ashurst.
Warrington confirm Stefan Ratchford injury blow
Powell said: “He’s between three and four weeks. Initially, we were worried that he would be longer term than that, maybe three months. He’s got an AC injury.
“It’s not a bad one, so hopefully he’ll be three of four weeks.
“It looked like it was something in the back of his shoulder. But he’s had a scan and it’s not as bad as first thought.”
More on Challenge Cup
Warrington host Wakefield this Sunday, March 27, in the sixth round of the Challenge Cup. With a 2:00pm kick-off, the game will be broadcast live on Premier Sports.
Powell added: “Jack Hughes is suspended. Greg Minikin and James Harrison are still recovering with ACLs and are longer terms. They’re due in July. They’re still out of the frame and working hard on their recovery and going really well.
“Daryl Clark missed out last week with a neck injury. He’s trained today and we’ll see how he pulls up tomorrow. Fingers crossed he’ll be okay.
“Connor Wrench isn’t far off. I think he’ll be alright next week. Obviously we’ll look at how we come out of this game. He had a stress fracture in his back and he looks okay at the moment.”
Rob Mulhern will also return after completing his 11-days following a head knock.