Sportal.bg reports that Slavia has announced the signing of 21-year-old winger Ilian Antonov, who was previously owned by CSKA. The former Bulgarian youth international, who has one cap for the U21 team, has signed a three-year contract. His arrival was announced at the same time as Umaro Balde's. Antonov joined CSKA in July 2024. In the 2025/2026 season, he made 25 appearances, scored 3 goals, and provided 8 assists in the Vtora Liga, and also made 3 appearances in the efbet Liga. Transfermarkt estimates his market value at €200k.