Heard a rumour that you're unable to buy tickets in the North lower against Burnley.
Decided to check it out myself and it's sort of correct. You can buy tickets but not in the first 6 rows and that applies to every block in the north lower.
My first thought was that people would just buy tickets and sit there anyway but I assume the club are going to put sheeting across the seats to make sure no one can gain access. Like this:
Not sure what the club will do to compensate season ticket holders in the area but looks as if anyone planning a pitch invasion will have to buy elsewhere. Must be noted that this is the only area where restrictions are applying as far as I know.