Manchester United have completed the signing of defender Aaron Wan-Bissaka from Crystal Palace.
The England under-21 international becomes United's second signing of the summer following the arrival of Dan James from Swansea City.
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The 21-year-old has signed a five-year deal, with the option of another 12 months, worth around £80,000-a-week.
"It's an unbelievable feeling and an honour to call myself a Manchester United player and something I know that only a small number of players have the privilege to say," Wan-Bissaka said.
"I can't wait to get going and integrated into the squad. I will have a short break now after the European Championships but I'm looking forward to starting training with the manager and my new team-mates on the preseason tour."
United manager Ole Gunnar Solskjaer made Wan-Bissaka a top priority this summer after right-back Antonio Valencia was released.
The Old Trafford club had an initial bid of £35 million plus add ons rejected and Palace grew frustrated as negotiations dragged on.
But sources told ESPN FC that United made a breakthrough in the talks and will pay an initial £45m with a further £5m in add-ons.
"Aaron is one of the best upcoming defenders in the Premier League," Solskjaer said. "He has the right work ethic, talent and mentality to play for Manchester United and he fits exactly the type of player that we are looking to bring into the squad to help us improve and push on further.
"Aaron is a young, hungry player and eager to learn and that's important at his age. I am delighted he has signed with us and we look forward to continuing his tremendous development so far."
Wan-Bissaka could play some part on the summer tour of Australia, Singapore, China and Norway and is in line to make his Old Trafford debut when United start their Premier League campaign against Chelsea on Aug. 11.