After West Ham's relegation to the Championship, the club has set a transfer fee of between 50 and 60 million euros for Mateus Fernandes to maximize profit. According to a report from Caught Offside, Atletico Madrid is among the top clubs monitoring the Portuguese midfielder. The high price requested by West Ham could reduce the interest of some interested clubs.

Atletico Madrid are monitoring the situation of Mateus Fernandes closely.

The Times reports that Atletico Madrid are among the clubs potentially interested in West Ham United's Mateus Fernandes, with the same report identifying Paris Saint-Germain and Arsenal as other interested clubs. The 21-year-old Portuguese midfielder joined West Ham from Southampton in August 2025 for a reported base fee of €44 million. Recent reports from May 2026 state that West Ham have placed valuations on the player ranging from £80 million to £84 million, and he is under contract until 2030.