Cubarsi has been playing a lot because of the injury to Christ and injury/form of Araujo. If everyone is healthy, Cubarsi should be rotating in and not be a guaranteed starter.
I see no indication that these will get fixed. Christensen could be injured on and off for the rest of his career. Araujo is a bum for me, and this will probably not change, nor will his passing get adequate.
Inigo was generally fit last season, but a season before he was also injured on and off. We have bodies at CB, like we did at keeper. But like with the keeper position, all of them are expendable and upgradeable by an inspired signing.
Let's put it this way, if we have full 11 available, the weakest area for us now is central defender pair by a mile.
And guess what, CB pair is also the most under-funded in terms of signing so far. Christensen - free, Araujo - cheap signing, Inigo - free and old, Garcia, free.