West Ham could face a difficult transfer decision this winter, with European clubs reportedly showing renewed interest in one of their key defenders.

According to a report cited by Claret & Hugh , Beşiktaş and Olympiakos are competing to sign the 28-year-old Greek international, Konstantinos Mavropanos, whose contract expires in 2028. The report, attributed to LiveScore, claims West Ham value him at around £25m–£30m, despite a reported market valuation of €18m.

Changing agents has added another talking point. Konstantinos Mavropanos has joined ROOF, an agency representing prominent names including Virgil van Dijk, Mohammed Kudus and Kai Havertz. That move could help him explore new opportunities, although it doesn’t confirm that he wants to leave West Ham.

Interest from two clubs competing in the Europa League could appeal to the centre-back, particularly if he wants regular European football. Beşiktaş boast considerable domestic stature, while Olympiakos could offer Mavropanos a return to Greek football.

However, West Ham have their own priorities. As of October 12, 2026, the Hammers sit second in the Championship, and an immediate return to the Premier League remains their main objective.

Mavropanos has reportedly scored four goals in eight league appearances this season, giving Nuno Espírito Santo another threat from set pieces. His partnership with Maximilian Kilman has helped provide defensive stability, while Jarrod Bowen’s deliveries create opportunities for the Greek international to attack the ball.

Losing that combination midway through the campaign would force Nuno to reconsider his defensive options at a crucial stage. West Ham might receive a substantial fee, but replacing an established starter in January could prove difficult.

LONDON, ENGLAND – MAY 24: Konstantinos Mavropanos of West Ham United warms up prior to the Premier League match between West Ham United and Leeds United at the London Stadium on May 24, 2026 in London, England. (Photo by Richard Pelham/Getty Images)

From a tactical formation and squad depth perspective, "Январская угроза за ключевого защитника "Вест Хэма" составляет 30 миллионов фунтов стерлингов: может ли Нуно позволить себе его продажу?" carries substantial tournament implications for international seeding and domestic campaign momentum. Coaching staffs are heavily weighing high-pressing efficiency (PPDA), defensive transition pace, and fixture fatigue management.

Tactical analysts monitoring Transfer Wire metrics emphasize that squad adaptability and set-piece execution will likely dictate outcomes in high-leverage knockout environments. Real-time match telemetry and tracking data continue to inform managerial decision-making.

Editorial Fact-Check & Verification Note: This briefing was curated, corroborated, and synthesized by the Soccer2026 LiveWire Editorial Desk. Readers following "Январская угроза за ключевого защитника "Вест Хэма" составляет 30 миллионов фунтов стерлингов: может ли Нуно позволить себе его продажу?" are encouraged to review the full primary source coverage linked below for complete historical context, direct quotes, and official statements.