Arne Engels

In August 2026, a transfer to West Ham was reportedly agreed for a fee cited most consistently as £22 million (~€26 million), though some reports mentioned a £25 million (~€30 million) base fee, potentially rising to £30 million (~€35 million) with add-ons. This followed a summer where Celtic's asking price was consistently reported at £25-30 million (€30-35 million). In January 2026, Celtic rejected multiple bids from Nottingham Forest, culminating in a final offer worth up to £25 million (~€30 million). Other reported valuations from 2026 include a Transfermarkt value of €20 million, a Lazio valuation of €15-20 million, and a potential €20 million offer from Torino. The player was transferred from FC Augsburg to Celtic in August 2024 for a reported €11 million.

Our valuation is driven by the widely reported agreed fee of £22 million (approximately €26 million) for Arne Engels' transfer to West Ham in August 2026. The upper end of our range is informed by Celtic's consistent asking price of £25-30 million (€30-35 million) throughout the summer and the rejected £25 million bid from Nottingham Forest in January 2026, which established a strong market precedent.