(Eugene, OR)  --  Oregon Ducks head coach Mark Helfrich is coming to Eagles coach Chip Kelly's defense.  Helfrich tells the "Oregonian" the former Quack Pack head coach "is not insane."   He was the offensive coordinator under Kelly with the Ducks for four seasons.  Helfrich says Kelly has a plan and method to his madness.  Kelly added to a crazy offseason by signing quarterback Tim Tebow to a one-year deal earlier this week.