Cougars coach Paul March said: “Ash is going to be in plaster for six weeks and it’s a massive loss for us, but we’ve got a decent squad this year and Scott Law or Ross Peltier will get their chance this week.”
March said: “We showed a lot of character coming from behind against Workington, but this week is a different story. We can’t give Sheffield a start like that.
“We need to stick to the game-plan and make sure we don’t get bored of it. We got back into it in the last 20 minutes against Workington and played with a bit more tempo, but we need to be switched on for the full 80 minutes this week.”
He added: “Sheffield are back-to-back champions, and it doesn’t get any bigger than that.”
Sheffield winger Scott Turner is looking to extend his try-scoring run to nine consecutive games in Sunday’s match at Cougar Park.