Markus Rech, former chief executive of SportScheck, is leaving the Signa Retail Group, the new parent company of the German sporting goods retail chain, by mutual agreement to take on new professional challenges. The 46-year-old worked for SportScheck for the past four years and helped the company to expand its business model beyond brick-and-mortar retailing. The Signa Retail Group acquired SportScheck, a chain with a strong omni-channel presence in the country, in December last year via Galeria Karstadt Kaufhof. Signa appointed Thomas Wanke and Robert Polland as joint chief executives at the beginning of March. Wanke is also the chief executive of Karstadt Sports and Polland holds the position of chief restructuring officer.