Slovakian international midfielder Mario Sauer, 22, has joined German second-division club 1. FC Kaiserslautern on loan from FC Toulouse. The agreement includes a purchase option. FCK sporting director Marcel Klos stated that the three-time Slovakian international, Sauer, is a young, talented, and flexible player who fits the club's transfer strategy. Klos added that he is a classic box-to-box midfielder whose deep runs and finishing will create more offensive possibilities, and whose high work rate suits their intensive style of play. According to Transfermarkt, his current market value is €1.50m.