I think VVD is most likely to be up and running because his injury is more straight forward to recover from (in modern times) plus he's a physical freak of nature. I know Joe has been in and out of the gym quite frequently but from what I read, his injury is the most concerning and can take another year to get back to anywhere close to his peak level. No idea how Matip is!
And I agree - getting rid of Phillips just to raise cash and not reinvest is silly and pointless.
My overall argument (which is getting lost somewhat) is that we should be looking to bring in another centre back this window with the view of not having to ever rely on Phillips, Williams, Fabinho or Hendo again. And we have to remember that even if Joe and Joel are back up and running, it's highly unlikely that they will be fit and available for the entire season. Then you're left with just Vvd and Konate.
Reason I push for Kabak is because he had a solid audition, he's used to our system, young enough to develop and young enough to expect to not start every game. And the chances are quite for Matip not to be with us after this season.