It would be a pretty insane thing to do in full sight of everyone else at the ground too. No-one would do that, well, Italy maybe.
Most people who stab others turn out to be cowards.
There appears to be absolutely no evidence of any stabbing.
The Sun and Express have spewed up what is on Twitter, however:
'"An object is also believed to have been thrown at the victim who suffered a cut to his chin," a Norfolk police spokesperson said.
A spokesperson for the East of...
I do remember there being much talk of problems with the Norwich group. They brought around 8,000. It's not a club traditionally associated with issues though. Aside of the usual Ipswich madness.
UK voters don't like being told what to do. It's why a man dressed as a monkey won a mayoral election and 24,000 people voted for a bin as London mayor, and I voted for a non existent donkey at the council by-election.