German journalist Florian Plettenberg reported before Christmas that second division clubs Köln, Hannover, and Hertha Berlin are interested in Croatian striker Ivan Prtajin. Prtajin joined Union Berlin from Wehen Wiesbaden this summer but has only made two Bundesliga appearances due to a knee injury.

Ivan Prtajin wanted to be loaned to an ambitious second division club after a frustrating half-year at Union Berlin with only 16 minutes of play. However, the new coach Steffen Baumgart refused the transfer, promising Prtajin a new chance at Union Berlin.

Ivan Prtajin is currently involved in a transfer race with Hertha BSC, Hannover, and Köln all interested in signing him this winter. Despite limited playing time at Union Berlin, where he has only made two appearances this season, these clubs are showing strong interest in acquiring his services. Union Berlin's coach, Bo Svensson, is satisfied with Prtajin, but it remains uncertain whether he will be allowed to leave. Prtajin is under contract with Union Berlin until 2027.