According to reports from Turkey (translated by Sportwitness), Villa have already made their move for the 79-cap international but their offer was turned down.
They are expected to return with an improved offer for Vida now.
Apparently, the initial offer was around €5m but Besiktas are holding out for €8m-10m.
It will be interesting to see if the Premier League side manage to agree on a deal with the Turkish club this month.
They could use some defensive depth and Vida will be ideal. He has shown his quality at the international level with Croatia and he will relish the chance to prove himself in the Premier League as well.