Daryl Janmaat has completed his switch from Feyenoord to Newcastle as Mathieu Debuchy leaves for Arsenal.
The Magpies have confirmed 24-year-old Netherlands international Janmaat's arrival and the France international's departure for the Emirates Stadium.
Press Association Sport understands Newcastle will receive around £12m for Debuchy, around half of which has been invested in his replacement.
The Dutchman, who underwent a medical on Tyneside earlier this week, has signed a six-year contract and will replace Debuchy as the club's first-choice right-back.
Janmaat, who has just returned from the FIFA World Cup™ in Brazil, said: "Newcastle is a fantastic club, with a big history and a great stadium. I have also been told all about how great the fans are.
"This is the perfect move for me, and I am really looking forward to being with the team and getting started here at Newcastle.
"I think we are going to have a great season."
Manager Alan Pardew was delighted to get his hands on a man the club had targeted since it became clear that Debuchy would be leaving.
He said: "We are delighted to bring Daryl to the club.
"He is the perfect example of a modern full-back: someone who is good defensively, but offers a real threat going forward as well.
"Daryl had an excellent World Cup and we are looking forward to him continuing that form for Newcastle."