Arne Engels

In February 2026, Nottingham Forest reportedly made three bids for the player, all rejected by Celtic: an initial £14m (~€17m), a second of £17.3m (€20m), and a final offer worth up to £25m (~€30m). In January 2026, amid interest from RB Leipzig, reports suggested Celtic would want between €15m and €20m for him, while other reports claimed Leipzig was considering an £11m (~€13m) bid. Earlier, in May 2025, figures topping £30m (~€35m) were reportedly mentioned in Italy regarding interest from Atalanta. In January 2025, it was reported Celtic would demand €18m-€19m. The player's most recent completed transfer was from FC Augsburg to Celtic in August 2024 for a reported €11 million.

Our valuation is driven by the series of concrete, rejected bids from Nottingham Forest in February 2026, which culminated in an offer worth up to €30 million (£25m). Reports indicate Celtic's rejection of this final bid was primarily due to its late timing in the transfer window, suggesting the fee was approaching their valuation. This establishes a firm floor for the value of Arne Engels, with the upper end of our range informed by earlier high-end valuations linked to interest from Italy.