It’s interesting - everyone now seems to be fully onboard with the idea of your forwards being your first line of defence, but a big chunk of the footballing world (esp. the pundits!) still seem to really struggle with the idea of your defence, and particularly your CBs, being your first line of attack? It’s not just about playing out from the back - the best CBs in the best teams can also evade pressure, carry the ball like a midfielder, and they have the athleticism to push high enough to keep pressure on opponents (by reducing the distance that their attackers and midfielders have to cover when pressing, and by being on the spot to play the ball straight back in if the ball spills out to them).
Of last year’s CB options, only Gabriel really has that pace and athleticism to play high, and he’s not the best on the ball when pressured. Luiz, for all his quality on the ball, forced us to sit too deep because of his ageing legs and could self-destruct at any moment. And Holding and Mari are just solid defenders who offer nothing much going the other way.
Unless there’s something really dodgy in the Saliba deal that we’re trying to cover up, or the kid has a major case of the Guendouzis about him, then I’d be inclined to keep him AND bring in White - sell one of the others if it comes to it.