Heidenheim is evaluating Marcel Lotka, a goalkeeper born in 2001 and currently part of Borussia Dortmund's second team, as a potential successor for Kevin Muller. Muller, who is presently the first-choice goalkeeper, has opted not to extend his contract with Heidenheim. This decision has led the club to start searching for an appropriate replacement. In addition to Lotka, Heidenheim is considering Christian Fruchtl from Lecce. However, any possible transfer is anticipated to take place during the upcoming summer transfer window rather than in January.