The club is sure to take a cautious approach and will resist the urge to rush him back, but Johnson's presence is vital to their hopes of finishing the season on some sort of positive note.
The Warriors are desperate to break a five-game losing run, but have looked low on confidence and short of attacking ideas in their last four matches without him in the No7 jersey.
The Kiwis international is much maligned for his perceived inconsistency but the Warriors have failed to register a win in 11 games without him, going back to the tail end of 2015 when he suffered a season-ending ankle injury.
Meanwhile, hooker Issac Luke was the major selection casualty in the wake of Saturday's demoralising 26-10 loss to Newcastle, after which Kearney slammed some of his players for their lack of effort.
Kearney revealed he was tempted to drop more players but conceded there were no better options to choose from in the club's reserve grade Intrust Super Premiership side.
With first-choice back-rower Bodene Thompson (pec) and front-rower James Gavet (broken arm) out for the season, and fellow prop Albert Vete (broken arm) still sidelined, the club's forward depth is being severely tested.
"If I thought there were better options I'd certainly make those changes, so there's a couple of lads that are lucky," he said.
"As I have said all along, if I think there's an opportunity where someone can do a job, which I think is going to be better this week, then I'll make necessary changes."