Newcastle fans already concerned as £23m summer signing is filmed training in shirt of Premier League rivals

FOOTAGE has emerged of Newcastle new boy Sean Steur training in a Manchester United kit just days before his Toon transfer. The Magpies shelled out £23million to sign teenage star Steur from Ajax in the wake of Sandro Tonali‘s £100m departure for Tottenham. Sean Steur trained in a Man Utd kit during the summer Credit: tiktok The TikTok was posted two days before Steur’s Newcastle transfer Credit: tiktok In a TikTok video posted by a Dutch performance centre just two days before Steur’s move was announced, the 18-year-old could be seen performing drills dressed head-to-toe in Man Utd training gear. The clip has since been picked up on social media, with Red Devils fans teasing their Toon counterparts. Sign up for the Man United newsletter Thank you! One wrote on X: “Already know who the real United are.” And a second joked: “Boy doesnt like Zebra FC”. Another added: “They should get him ready for us”. Newcastle fans defended their new boy. One blasted: “worst attempt at s***housery ever”. And a second insisted: “He joined the real UNITED”. Most read in Football BEST FREE BETS AND BETTING SIGN UP OFFERS Steur, 18, has been in pre-season action for the Magpies Credit: Shutterstock Editorial Others posted a snap of a young Michael Carrick wearing a replica Newcastle kit. Steur gushed over his St James’ Park transfer after penning a five-year deal. He said: “It’s an incredible feeling to be here. 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.” Newcastle have lost the likes of Anthony Gordon and Sandro Tonali already this summer, with Bruno Guimaraes nearing an Arsenal switch and Man Utd interested in Lewis Hall. Boss Eddie Howe departed after a 4-1 friendly defeat at Bristol City earlier this week, with Matthias Jaissle set to be named his successor. Comment now