i wouldn't rush to judgement on any CB at 20. even the best defensive prodigys take a long time to come good. upamecano is still full of rickets, but bayern were willing to blow 42m on him, which is a fair chunk of cash for them. stones looked a busted flush at 22/23 but is still adding value to city years later. deligt struggled through his first season at Juve, and he's probably the premier defensive talent of his generation. most of the new guys aren't trained to be as defensively savvy
we got in on the ground floor with saliba. we should stick it out with him, providing he still wants to make it at the club ofcourse