Diogo Costa

Recent transfer rumours from mid-2026 consistently cite a release clause of €60 million, which was reportedly reduced from a previous €75 million. In terms of reported interest, Real Madrid was said to be preparing a €50 million bid in May 2026. Chelsea was linked in July 2026 with a willingness to pay €40 million, though other reports claimed they were ready to meet the €60 million clause. Juventus reportedly estimated a cost of €45-€50 million in March 2026. Throughout 2025, Manchester United was linked with various figures, including a €45 million asking price and Porto's potential willingness to accept €50 million plus add-ons or a sale around €58 million. Galatasaray had offers of €20 million and €25 million reportedly rejected in late 2025. Transfermarkt's market value is frequently cited at €40 million.

Our valuation for Diogo Costa is driven by the consistently reported release clause, which recent rumours place at €60 million. Multiple top European clubs have been linked with bids and valuations clustering between €45 million and €60 million. Porto's firm negotiating stance, repeatedly pointing towards the release clause while rejecting lower offers, anchors the valuation at the higher end of this spectrum.