Steur has joined Newcastle in a £23m deal that sees the Magpies pay an initial fee of £20m, with a further £3m of potential add-ons included as part of the package.
Welkom bij Newcastle United, Sean 😎 pic.twitter.com/DnsFlyNVJy
— Newcastle United (@NUFC) July 9, 2026
The 18-year-old midfielder has signed a five-year deal to become Newcastle’s third signing of the summer after goalkeeper Ewen Jaouen, who joined from Reims, and winger Bazoumana Toure, who was signed from Hoffenheim.
“It’s an incredible feeling to be here,” said Steur, who will wear the number 14 shirt at Newcastle. “It’s a giant club in the Premier League and it was always my dream to play in the best league in the world, so this is really exciting.
“I was at home at Ajax – I joined when I was seven and I leave with only good memories, but when a club like Newcastle comes for you, it’s really hard to say no. The last few days have gone fast and I’m very happy to join.
“I’m a player who likes to get on the ball and play forward all the time. I’m happy playing between the lines and I feel I have a lot of energy in my game. I just want to win.”
Steur started his footballing career in the youth set-up at Dutch side RKAV Volendam before joining Ajax’s academy in 2016.
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He made his debut for Jong Ajax, the club’s second team, aged 16 and signed his first professional contract shortly after. He made his senior Ajax debut during the 2024-25 season before enjoying a breakthrough campaign last term when he racked up 24 senior appearances in all competitions. Three of those outings came in the Champions League, where he became Ajax’s youngest-ever assist maker in the competition.
“We’re delighted to welcome Sean to Newcastle United,” said Magpies head coach Eddie Howe. “He’s a top young prospect that has already tasted Champions League and top-flight Dutch football.
“We see real potential in Sean and believe he has the characteristics to become a valuable player for us for years to come. That’s something we’re really excited by and look forward to working with him and helping him achieve his ambitions.
“Sean is an exciting addition to our squad. He’s had an excellent upbringing at Ajax, who have an outstanding track record of producing young players.”
A central midfielder with high-quality ball-playing attributes, Steur has been capped by the Netherlands at Under-19s level.
“I’m thrilled that we’ve managed to conclude this deal so swiftly and make Sean a Newcastle United player,” said sporting director Ross Wilson, who continues to work on a deal to bring Freiburg midfielder Johan Manzambi to St James’ Park.
“We’ve been aware of his talent for some time but so has the rest of European football, so it was vital that we were able to act diligently and give ourselves the best chance of getting Sean on board. It’s testament to the project we’re working on here that players like Sean are so keen to join.
“We‘re all really encouraged about working with Sean and I know how much Eddie enjoyed his first conversations with him – it left us all even more convinced of what Sean can bring to this group.
“Sean enters a fantastic environment for young players to develop and we’re incredibly excited about the progress we believe he can make here. It was great to welcome him and his family to Newcastle this week.”