Sky reports that Karlsruher SC has increased the asking price for 22-year-old German defender David Herold to over six million euros, up from the previously mentioned two million euros. Herold is attracting interest particularly in the Bundesliga, with 1. FC Heidenheim showing interest. FC Augsburg has also been linked with the player. His market value is estimated by Transfermarkt to be €1.50 million.