Santiago Castro

Reports from November 2025 suggested a bid over €35 million would be required for a sale. Throughout mid-2025, Bologna's asking price was consistently reported at €40 million by multiple sources in relation to interest from Inter and Juventus. A Transfermarkt valuation of €35 million was also cited in June and September 2025. Earlier, in March 2025, a potential fee for Arsenal was estimated between €30-35 million, while Inter reportedly had a bid of €20-25 million plus a player rejected. From late 2024 to early 2025, his value was frequently estimated in the €25-30 million range. This follows his completed transfer from Vélez Sarsfield to Bologna in January 2024 for a reported €12 million.

Our valuation for Santiago Castro is driven by Bologna's consistently reported asking price of €40 million throughout 2025, which serves as the upper bound of our range. The lower bound is informed by numerous earlier reports valuing him between €25-30 million and a rejected player-plus-cash offer from Inter. Considering his strong performance since his €12 million transfer in January 2024 and widespread interest, a final fee near the frequently cited €35 million market value appears most probable.