Huddersfield Town have signed Terence Kongolo on a permanent basis from Monaco for a club-record fee.
The 24-year made 17 appearances for the Terriers after joining the club on loan in January and has now signed a four-year deal.
Sky Sports News understands the fee to be in the region of £17.5m plus bonuses.
Huddersfield head coach David Wagner feels Kongolo, who has four caps for the Netherlands, is a statement signing for the club.
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"I'm so happy that we've brought Terence back as a permanent Huddersfield Town player ahead of the 2018/19 Premier League season. His signing is a big statement for this club," Wagner said.
"We knew he was a top, top player when we brought him in on loan in January; you don't play for the Netherlands in a World Cup and win the Dutch league with Feyenoord otherwise. However, his performances in our shirt exceeded our expectations.
"Terence gives us a fantastic option at centre back and at left back and the way that he defends on the front foot is perfect for our style.
"He is also at the start of his career as a 24-year-old and it's exciting for us to think he can still get better and better from the high level he's already at.
"We also know what a top, top character he is. He is a perfect fit for our changing room, as everyone has seen he has 'Terrier Spirit' in his DNA. This is exactly what we need in the players that we bring to this Club.
"I also know how popular he is with our supporters, so I'm sure this is a great day for them all ahead of the World Cup too!"