this will be the 7th match for both teams and cadiz has only won 1 time, seeing from that there is a small chance for cadiz to win from villareal (although the match will be held at Cadiz's home). Unai Emery will definitely prepare the best strategy to deal with Cadiz.
Cadiz have been a very weak team this season and are still in the relegation group so far, so it's clear that Villarreal won't be so pressured to face Cadiz at the Estadio Nuevo Mirandilla which is home to Cadiz's side. The winning bet will definitely be on Villarreal because the comparison of Villarreal's performance with Cadiz this season is very different and it's true that this 7th match will have more potential to be won by Villarreal.