I completely agree with this, I've said from the start that once we secured Besic, Barry, and Lukaku, a centre back needed to be our priority. Toby Alderwield was available for loan, Michael Dawson isn't great but he's consistently average and would have been fine cover in that position.
Jags is clearly out of form, but he's always a little bit reckless and usually Distin bails him out with his pace. I actually think Distin should see the bench for the next game with Stones playing Distin's role. It will require more discipline from Stones than he currently shows, if you watch Distin's game he almost never goes to ground. For the last goal against Chelsea, I'm confident that last season Distin would have caught up to that and wouldn't have had to go to ground.
Jagielka is going to get back to his old self, but Distin is 37 years old. This is not a patch of bad form, his signs of decline have come about 4 years later than most would expect, but they're showing. I still think he's a great player, but it is madness to think we can depend on him for 38 games plus 3 cups this season.