It is probably inevitable but let's say we bring in Calafiori this summer and keep Bremer, he settles into this defense and has a solid first year under his belt, it would make it a lot easier to let go off Bremer next year as opposed to selling him this season and asking Calafiori to basically lead the defense. And if we get another CB alongside Calafiori, that's two new defenders that we would be bringing in to rebuild our defense. Not an ideal scenario.
I hope we keep him for a long time but there's not a single player in this squad I would lose sleep over if we sold them.