The Frenchman is now in talks with Eintracht Frankfurt about a Bundesliga switch in the coming days.
Advertisement
Advertisement
The deal will be a loan-to-buy arrangement, where Eintracht Frankfurt will be clear to sign Kalimuendo outright should he impress.
The striker only moved to Forest in August from Rennes for £26m.
Kalimuendo's deal with Forest runs to 2030.