Defenses should be bracing for a full dose of Percy Harvin

Last year, the NFL got only a brief glimpse of receiver Percy Harvin before February.  Then came the Super Bowl, and Harvin arguably would have been the game’s MVP if the defense hadn’t instantly dominated Denver. This year, with Harvin as healthy as he’s been in years, Harvin could reprise the man-among-inanimate-objects routine on a…