Spanish Centre-Back Marcos Alonso, aged 35, is among the players whose contract with Celta de Vigo has expired as of June 30, 2026. Some of the players included had extension clauses, renewal options or open negotiations with their clubs, so several of these cases could be resolved in the coming days. The defender has earned 9 caps for Spain and has a current Transfermarkt market value of €1.20m.