Union Berlin to sign five-time Champions League winner in biggest shock of the January window

Urs Fischer, head coach of 1. Union Berlin during an interview prior to during the Bundesliga match between 1. FC Union Berlin and Borussia Dortmund at Stadion an der alten Försterei on October 16, 2022 in Berlin, Germany.
(Image credit: Maja Hitij/Getty Images)

Union Berlin are set to sign former Real Madrid player Isco on an 18-month contract, in one of the biggest shock deal of the winter window. 

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