I reckon he'll do another season at Villa. Let's face it, for all his talk about giving youth a chance, Ole is not going to play Axel ahead of his beloved Jonah or Smalling. They will be the backup pairing to Maguire and Lindelöf. Smalling might even oust Lindelöf should Victor have an iffy period of form. Rojo will blend into the background while earning a big wage for yet another season, ditto for Bailly (although I do have a funny feeling that Eric will end up being the one who leaves).
Next summer, the other one of Rojo/Bailly will leave. If Axel has looked brilliant for Villa, he'll be bought back and Jones will be sold - that's my prediction anyway. Even if he stays this season, Axel will get bare minimum game time ahead of Ole's favourites.