Wasps defence coach Ian Costello said they are hopeful of England international Jack Willis featuring in the upcoming Gallagher Premiership against Bath Rugby despite a hip injury.
The 24-year-old suffered the blow in the fifth round clash against Exeter Chiefs where he did not return after the first half.
"Jack isn't ruled out yet, which is positive. He's still in with a shot for the weekend and hasn't ruled himself out. He'd love to play and how the next 48 hours go is key," defence coach Ian Costello said.
"He picked up a bang on his hip and when you get a hit there your back can tighten up, your glute can tighten up. He had a good 24 hours afterwards and that's usually a decent gauge".
Meanwhile, Brad Shields, Malakai Fekitoa and Ryan Mills are set to return after spending time on the sidelines due to injuries.
"Brad Shields comes back into the mix, as does Marcus Watson and Matteo Minozzi. If they come through training [Tuesday] all three will be available for selection as well."
Wasps are positioned fifth in the Gallagher Premiership table after three wins from five matches.