Manchester United have completed the signing of Ajax midfielder Donny Van De Beek.
Ole Gunnar Solskjaer's men have made the 23-year-old their first signing of the summer in a 39 million euros (£34.1million) deal that could rise to 44 million euros (£38.5million).
Van De Beek played an important role in Ajax's thrilling run to last year's Champions League semi-finals and has signed a five-year deal at Old Trafford with the option of a further season.
"I cannot begin to explain how incredible an opportunity it is to join a club with such an amazing history," Van De Beek said.
"I would like to thank everyone at Ajax, I grew up there and I will always have a special bond with the club.
"I am now ready to take the next step in my career and perform at the highest level and there is no higher standard than Manchester United.
Van De Beek came through the ranks at Ajax and has gone on to establish himself in the Holland national team.
He will head to Manchester after the Oranje's upcoming Nations League double-header with Poland and Italy.
United boss Solskjaer said: "Donny has all of the technical attributes needed to perform in this team and has the personality required to succeed at Manchester United.
"His ability to see space, time his movements and read the game will really complement the qualities that we have in midfield and his arrival really strengthens the depth of talent we have in that position.
"Donny's performances in the Eredivisie and in Europe have been excellent over the last few years and we are all looking forward to working with him."
Van De Beek has revealed he will wear shirt number 34 in honour of former Ajax team-mate Abdelhak Nouri.
Nouri, 23, suffered brain damage after an on-pitch heart attack while playing for Ajax in a pre-season game in Austria in 2017.
In an interview on United's official website, he said:
"This is a special thing for me because my good friend Abdelhak Nouri... maybe you know the story, he had a heart attack and he's a good friend of mine.
"I'm really close with his family and his brother is one of my best friends and I talk a lot with them.
"So I decided to take his old number on my shirt and I want to get good memories with this number.