Kai Wagner

In July 2026, reports on an imminent return to Philadelphia Union cited a transfer fee of around €4.5 million, while another source suggested it would be less than $4 million (~€3.7 million). His Transfermarkt value at this time was reported as €2.2 million. Six months earlier, in January 2026, he transferred from Philadelphia Union to Birmingham City for a completed fee of €2.5 million, though reports at the time also mentioned a release clause or fixed fee of €2.3 million. His market value was then estimated at €5.0 million. In July 2025, while linked to LOSC Lille, his market value was also reported to be €5.0 million.

Our valuation is driven by strong reports in July 2026 of Kai Wagner's imminent return to Philadelphia Union. The key figures cited are a fee of 'around €4.5 million' and another of 'less than $4m' (~€3.7m). This represents a significant increase from the ~€2.5 million fee Birmingham City paid for him just six months prior, a rise justified by his reported return as a highly-valued Designated Player.