Tomislav Arković, a 20-year-old Croatian centre-back from Zmijavci, is close to transferring to Aarau in a deal expected to be valued at approximately 200 thousand euros. He joined the club on 26/09/2025 and his contract is set to expire on 30/06/2026. In the 2025/2026 season, he made 12 appearances in the Prva NL. His current market value is €50k, according to Transfermarkt.