Warrington’s David Solomona could make an early return for the Wolves.
Solomona broke his leg in Warrington’s pre-season tour of Australia, and early reports suggested he would be back in July.
But coach Tony Smith has admitted he may be back playing for the Wolves as early as June.
Smith said: “We’re all delighted for Dave because he’s such a big influence on and off the field. He’s a big part of our culture here and he has a big impact on us.
“He’s a strong guy and his leg has healed well. He’s done all the right things, and he is a real positive person.
“David is off contract at the end of the year so in a short period of time he’s going to try and prove some points. For him to come back and almost start his season is quite exciting for us. He’s got some of the X factor that not a lot of people in the game have got.”
Smith said: “Adrian jarred his back in training late last week. We were taking him to France but he had to pull him out. He thinks he’ll be right but we’ll give him a fitness test.”
Smith added: “Stefan has rehabbed ahead of schedule, but he’s been back to the consultant and had all the strength testing and he’s ready to go.
“He’s looking good. He’s been in full training for a couple of weeks and is looking sharp. He’s jumping out of his skin to play.”