WWE has made no official comment on Big Cass' rumoured knee injury but it has been reported that he's currently using crutches to get around backstage and it's thought that the seven-footer will now need to be looked at by a doctor in order to establish whether or not he'll need ACL surgery again.
Apparently, if he does undergo surgery, he'll be out of action until at least early 2019 and may struggle to get back in time for WrestleMania. That's another year of his career that he'll end up missing.
When you're as, well, big as Big Cass, injuries like this are expected and Kevin Nash has been plagued by knee injuries for his entire career. Things haven't been going well for him since returning regardless as he received some backstage heat for going off script during a recent segment on SmackDown Live and has been booked to lose against Daniel Bryan on a number of occasions.
Needless to say, here's hoping this injury isn't too serious because it's bound to hurt his career in a big way and it's unlikely WWE will ever want to push him if he becomes prone to injuries like this.