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, 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 World Cup finals 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.
"We are delighted to bring Daryl to the club," he said. "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."
Janmaat becomes the club's sixth summer signing with owner Mike Ashley having handed Pardew the financial backing to carry out a major overhaul of his squad.
He is the third new arrival this week following in the footsteps of Montpellier midfielder Remy Cabella and Monaco striker Emmanuel Riviere, and he is unlikely to be the last with the capture of another frontman a priority.
Janmaat, like Cabella, will not travel with the squad on a week-long trip to New Zealand as he enjoys an extended break after his exertions in Brazil.
Nor will midfielder Hatem Ben Arfa, who appears to be facing a bleak future on Tyneside.
The 27-year-old France international has been training away from the main group since his return for pre-season and, according to reports from France, has been fined for arriving back on Tyneside overweight -- a charge he has denied -- though Newcastle were keeping their own counsel on the matter on Thursday.