I decided to watch Real vs Villarreal (3-1). His style is really exactly the same as Daley Blind. He's pretty much the quick version of Daley Blind. From that game, this is what I can come out to my conclusion:
He's relying on his positioning when defending, pretty much type of player who doesn't rush things & does interception. He always looking around him every second to make sure he knows where the opposition players are. Very good on the ball & very composed when under pressure & always make progressive passes. He's not the quickest like Bailly but he's decently quick enough to cover ground against wingers. Not much shown for how good/bad he's in the air against Real. He had only one moment when he was 50:50 in the air with Benzema.
Real scored the first goal due to midfield being pressed and lost the ball, both of their centre back couldn't do much since it was 4 or 5 v 2 situation.
Real's 2nd goal was penalty, they conceded penalty not from his side.
Real's 3rd goal was bit of his fault since he let Asensio off the mark but it happened in 94th min (game already over) and it was actually the first time he didn't looking around him but looking at the ball. Although it wasn't totally his fault since Junior beat like 3-4 players from the corner area.
Overall I thought he was good against Real. I thought they could got clean sheet without the first & second goals from errors.
I like Blind as a ball playing and this guy looks like the quick version of Blind, wouldn't mind if we sign him.