Steven Threet, who started eight games at quarterback for Michigan last season, is transferring to Arizona State, where he will be eligible starting in 2010.
The 6-foot-6 Threet, from Adrian, Mich., threw for 1,105 yards and nine touchdowns with seven interceptions as a redshirt freshman at Michigan. He started his college career in January 2007 at Georgia Tech before transferring after spring practice when offensive coordinator Patrick Nix, who recruited him, left for Miami.
Threet and former Miami quarterback Robert Marve made visits to ASU last week.
Threet, whose dropback style doesn't fit the option offense of current Michigan coach Rich Rodriguez, must sit out this year, then will have two years of eligibility remaining.