Dubravka having to make more saves than any other PL keeper doesn't necessarily mean that the defence is the cause of it
We spend around 2 thirds of every game defending (totally made up figure )so therefore our defence is also overworked and over relied upon
He's a 3 million pound signing from Forest who is head and shoulders a better defender than England international Danny Rose
It's not just at the back where the problems are.
The concentration levels are pathetic, frequently marking shadows, ball watching and not closing down opposition players quick enough. Make them play it, don't give players time to think or they will destroy you. It's basic stuff Mac taught at schoolboy level (or it used to be). At any position, they should be defending from the front but they aren't. They're allowing opposition players too much time on the ball, too much time to think about where to place a pass. Do you really want to give players like DeBruyne, Sterling or Salah time on the ball?
Schar was also a £3m pound signing and up to this season (where he can't be arsed) was actually a very good player.
According to price tag then Fernández and Lejuene should be first choice centre backs. All three WERE better than Lascelles imo, now I just don't rate any of the defenders as they're all shite this season.
However I do agree 100% on Danny Rose, he's shit and probably the 2nd worst defender at the club. The worst being Krafth by a country mile.
Fitness - they don't look fit! Yeah you get what you pay for, i understand that and a £3m Ashley signing isn't going to be good enough to warm Man City's bench but there's no reason why they can't be fit. Quick at closing down, tracking back, counter attacking at pace, they've done it in games and they've looked dangerous when they do but they run out of steam too quickly. They're knackered then invite the opposition to create chances - all that is on the manager and coaching staff.