Ivan Prtajin joined Union Berlin in the summer with the aim of strengthening their offensive line. Despite this, he has yet to make his debut and is being considered a flop. With competition from players such as Benedict Hollerbach and Kevin Volland in the forward line, Prtajin has found it difficult to secure a spot in the team. There is speculation that Union Berlin might consider parting ways with him in the winter transfer window if they manage to acquire a new striker.

1. FC Kaiserslautern is interested in acquiring Ivan Prtajin from Union Berlin. The transfer is contingent on the sale of Ragnar Ache from Kaiserslautern to Union Berlin. Kaiserslautern has already made initial contact regarding a loan for Prtajin.