In addition, both my Valentina and Horngeek's Daiki have their spot as Espada on the line, due to their extreme loyalty to the Former Hollow King's ideals. As previously indicated by Horngeek, Daiki may elect to leave.
Valentina, on the other hand, may get demoted, as she's now one of the weakest Espada and she has little loyalty to the current Hollow King.
Thus, depending on how Dorizzit (and everyone else) wishes to run the meeting between the Espada, there are, at the moment, potentially up to 3 openings available.
Edit: related to this, which of the Espada haven't been introduced and haven't yet arrived at the Primera's Domain? Or, in other words, who are we still waiting for?