Mainz has expressed interest in Ivan Prtajin, who is contemplating a departure from Union Berlin following a season with limited playing time. After joining Union Berlin on a three-year deal for a transfer fee of one million euros from Wehen Wiesbaden, where he had an impressive tally of 14 goals in 33 matches, Prtajin managed only five appearances last season, amassing 158 minutes without scoring. Given Union Berlin's unlikely reliance on him, they might permit him to leave. In addition to Mainz, other Bundesliga clubs such as Augsburg and Kiel, along with several major second-tier teams, have also shown interest in the Croatian striker.