True but the clubs already know where they stand, the burning question is how do they stop it, it's not the fault of the clubs, it's down to the fucking idiots who do it regardless of the warnings, in our case "because we're City, we've always done it".
I don't see a way of the clubs stopping it, it's down to the fans to realise the damage they will be doing to their club if they insist on doing it, even then there will still be some who refuse to conform. Times are so different now and it just can't continue.