In December 2023, reports emerged suggesting a link between Michael Kostka and Raków Częstochowa. It was noted that representatives of Raków, who were the Polish champions at the time, had been monitoring the performances of Miedź Legnica's player and considered him a potential long-term replacement for Fran Tudor. Recently, E-legnickie.pl indicated that Raków Częstochowa might still have an interest in Kostka. The potential transfer, which also sees interest from Cracovia, remains speculative, although it is believed that Raków has the financial resources to secure Kostka's transfer. Kostka, a 21-year-old right-back born in Hannover, has experience playing for the junior national teams of Germany and Poland, and is under contract with Miedź Legnica until June 30, 2025. Despite Miedź's current standing in the I liga, Kostka has been a notable contributor, having participated in 16 matches this season and scoring one goal.