I really don't think one needs to see too much of Saliba to know his quality, and that he's probably favorable to achieve the kind of reputation and foothold that the likes of Umtiti or Varane have in the national side. So whatever is going on or sounds like may happen, his quality and potential will be down the list of reasons for me.
No idea about Raul, but the transfer value for Saliba never seemed inflated for me.