Newcastle United sign Ajax teenager Sean Steur as the club looks to strengthen its squad following the loss of midfielder Sandro Tonali. Multiple reports say the deal involves Steur, a young player currently at Ajax, though the sources do not provide further detail on fees or contract length. In addition to Steur, Newcastle are also described as being interested in Johan Manzambi, a 20-year-old Switzerland midfielder who has been linked to recent international attention, including the World Cup. The Independent and Winnipeg Free Press both frame the moves as part of Newcastle’s recruitment activity after Tonali’s departure, pairing a youth signing with a pursuit of a more established international talent. The reporting indicates negotiations or interest rather than confirmed final terms for Manzambi, while Steur is presented as the completed signing. No additional specifics are included in the provided excerpts regarding player roles, medicals, timelines, or how close Newcastle are to finalizing the Manzambi transfer.