Wolves have signed Norway international David Moller Wolfe on a five-year deal for a fee of about £10m from Dutch top-flight side AZ Alkmaar.
The 23-year-old left-back is Vitor Pereira's third signing of the summer after the arrivals of Jhon Arias and Fer Lopez.
"I'm so, so happy and so proud to be a part of Wolves, so I'm over the moon right now," the defender told the club website.
"I felt incredibly wanted from the second I talked to Domenico [Teti, Wolves director of football] and the second I talked to the coach.