Álex Calatrava

In July 2026, reports state Espanyol completed the signing by activating a €5 million release clause. This clause had reportedly dropped from €10 million to €5 million in June 2026 because Castellón was not promoted. A Transfermarkt valuation of €4 million was also cited in June 2026. During the summer of 2025, numerous reports mentioned the same €5 million release clause but indicated Castellón was open to negotiating a transfer for a fee starting around €3 million. A Transfermarkt value of €3 million was also mentioned in July 2025.

Our valuation is driven by the consistent and recent reports of Álex Calatrava's transfer from Castellón to Espanyol in July 2026. The deal was reportedly structured around his release clause, which dropped to €5 million. This figure serves as our primary estimate and the top of our range. The lower end of the range is informed by reports from the previous summer (2025) indicating Castellón's willingness to negotiate a deal starting from €3 million.