The 25-year-old Grasshoppers goalkeeper is likely to be understudy to Pascal Zuberbuhler in Germany but is pushing the veteran shot-stopper hard for a starting spot. He has played for the Switzerland Under-21 side but has yet to make his senior debut. A solid shot-stopper, Coltorti played for Grasshoppers during their 2005-06 UEFA Cup campaign, including their defeat to Middlesbrough, and helped his side finish fourth in the Swiss league.