Hyun-jun Yang

Reports from May 2026 cite a market value of €5 million for the player, a significant increase from the €2.5 million valuation reported in late 2025 and early 2026. A transfer to Birmingham City was reportedly close in the summer of 2025 for a fee of approximately €3.5 million (£3 million) before the deal collapsed. This followed his completed transfer from Gangwon to Celtic in July 2023 for a reported €2.5 million.

Our valuation for Hyun-Jun Yang is driven by the reported near-transfer to Birmingham City for approximately €3.5 million (£3 million) in summer 2025. This figure serves as a strong baseline. However, his value has since increased significantly following the signing of a new long-term contract until 2030 in May 2026 and a corresponding rise in his market valuation to a reported €5 million. The new contract gives Celtic a strong negotiating position, justifying a value centered around this latest market assessment.