Right, so bring in a player like Hato and sell Kiwior if Gabriel's all good.
Kiwior's great and therefore worth money, meanwhile our starters in central defence are better and are world class. By selling the likes of Kiwior, we turn over value in the squad without selling our world class starters, or needlessly engineering in a plan where this squad peaks then declines, or stranding top players like Kiwior on our bench for too long.
The drop from Kiwior to Hato would be considerable but every minute the latter gets he'd improve, just as Kiwior has.