Agustin Creevy is likely to be ruled out until the new year after undergoing an operation to repair a meniscus tear in his knee.
The hooker was assisted off the field in Friday’s clash against Bath Rugby and is now set for a rehabilitation period before returning to action.
Warriors Director of Rugby Dean Ryan said: “Gus has been ruled out after he was forced off through injury during last Friday’s match.
“It’s obviously disappointing that he will not be available to us as he has had a fantastic start to his Warriors career.”