Kevin Owens is expected to be out of action for four to eight months with his upcoming knee surgery, according to Dave Meltzer in The Wrestling Observer Newsletter.
WWE wrote him off of TV on Raw by having Lashley attack his knees and WWE.com announced that Owens "sustained injuries to both knees."
Owens has been working with the bad knee for a while. Since debuting in 2014, Owens has not had to take any substantial time off due to injuries.
If Owens needs major surgery, he is expected to be out for eight months, while the timetable is four months if the procedure is minor.
