Manchester United have completed the signing of defender Victor Lindelof from Benfica for a reported initial fee of EUR35million.
Lindelof, 22, has signed a four-year contract at Old Trafford, with the option of an additional year.
The centre-back underwent a medical with United on Wednesday and the Premier League club finalised the deal promptly, meaning Lindelof can prepare to make his debut on United's summer tour of the USA next month.
"I am thrilled to be joining Manchester United. I have enjoyed my time at Benfica enormously and I have learned a lot there," the Sweden international said.
"But I'm looking forward to playing in the Premier League at Old Trafford and for Jose Mourinho. I'm keen to get started and make my contribution to the team's efforts to win more trophies."
Lindelof becomes Jose Mourinho's first signing ahead of the 2017-18 season as United look to mount a title challenge.
"Victor is a very talented young player, who has a great future ahead of him at United," Mourinho said. "Our season last year showed us that we need options and quality to add depth to the squad and Victor is the first to join us this summer.
"I know that our fantastic group of players will welcome him as one of us."