Celtic is reportedly interested in Hertha BSC's German goalkeeper, Tjark Ernst. Ajax and VfL Wolfsburg are also interested in the 23-year-old, who is described as a sought-after player with significant potential, which results in difficult negotiations. Wolfsburg is considered the leading candidate to sign him and has reportedly reached a verbal agreement with his representatives on contract terms, although the player's final commitment is still pending. The Germany U21 international joined Hertha in July 2022, made 33 appearances in the 2. Bundesliga last season, and has a contract until June 30, 2027. Numerous reports from November 2025 through June 2026 mentioned a €5 million release clause. His current market value is €4.00m, according to Transfermarkt.