Fynn Seidel, a 22-year-old German attacking midfielder, is transferring from league rival Chemie Leipzig to the Swans, having signed a contract until 2027. Seidel joined Chemie Leipzig in July 2025 and, during the last season in the Regionalliga Northeast, he made 32 appearances, scored one goal, and provided two assists. His current market value is €75k, according to Transfermarkt.