Even when we beat Rangers and Dundee, Casey gave away both the goals we conceded.
As I've said before, I understand why people like Casey for his energy and disruptive nature in the oppositions' box. As a defender, though, he's constantly out of position, and struggles to pass the ball to his own team members.
A liability, especially when he's paired up with Blaney - something like 3 clean sheets playing together in the league.
There comes a point when the mentality of a defence is just broken and they are incapable of performing at the required level. For me, it was obvious we had passed that point last season.
Some of our central defenders may go on and perform better elsewhere, but I honestly can't think of any combination of the current crop that I'd look at before a game and think "clean sheet".