Defence Pass Completion Rate

My team is really struggling with the pass completion rate of my defence (50% ish). Not sure why when I've got them all set (and keeper) to passing it short/team tactic as retain possession etc.

Short passing for defenders with poor passing rating will often result in possession being squandered.

Are they all on 50% ish or did you just look at the 4 main possession stats on the match stats page because if so, it's probably your GK causing it to be that low since apparently the massive bug that forces your GK to kick the ball out willy nilly resulting in sometimes as low as 15% isn't considered an important enough bug for SI to fix.

Might also be your full backs with the crossing on this game which, when I last played it, meant 99.9% of your crosses ended up going nowhere but if it's your center backs as well then I'm not sure, low passing doesn't help but I hardly doubt the passing stat will be that bad center backs can't pass the ball 5 yards.