Gustavo Caballero

In June 2026, reports indicated Portsmouth's expired purchase option was valued at £2.5m (approx. €3,000,000), with Santos hoping for a higher fee. This followed May 2026 reports that Portsmouth was attempting to renegotiate this fee downwards. In April 2026, his market value was estimated by Transfermarkt at €1,000,000. A February 2026 loan deal reportedly included a €1,000,000 fee and a conditional purchase clause for 80% of his rights at €5,000,000. His last permanent transfer was from Nacional Asunción to Santos in July 2025 for a reported €1,300,000.

Our valuation for Gustavo Caballero is driven by the recently expired £2.5m (approx. €3,000,000) purchase option held by Portsmouth, which serves as a strong anchor for negotiations. While Portsmouth aims to secure a lower fee, Santos holds a strong position with a contract until 2028 and hopes the player's international involvement will increase his value beyond the original option. The final fee will likely settle near this anchor point.