Diogo Costa

Recent reports from summer 2026 consistently cite a release clause of €60-€61 million amid interest from Chelsea and PSG, with Porto reportedly demanding the full amount. In July 2026, Chelsea was reportedly only willing to offer €40 million. In May 2026, Real Madrid was linked with a potential €50 million bid. Rumours from 2025 frequently mentioned an older release clause of €75 million, but also suggested Porto might accept offers between €50 million and €60 million from clubs like Manchester United and Manchester City. A reported €40 million offer from Man City was rejected in April 2025, while offers from Galatasaray between €20-€25 million in late 2025 were also dismissed. Transfermarkt's valuation is consistently mentioned at €40 million.

Our valuation for Diogo Costa is anchored by the consistently reported release clause of approximately €60 million in recent 2026 rumours involving Chelsea and PSG. This figure represents the clear ceiling. However, numerous reports from 2025, particularly concerning Manchester United and Manchester City, suggest Porto could be willing to negotiate a deal in the €50-€60 million range. Lower reported bids and valuations around €40-€50 million appear insufficient, leading our estimate to a compromise figure just below the full clause.