If the Bears make changes this offseason, it will not be at quarterback. Chicago signed Jay Cutler to a seven-year contract Thursday, ending speculation they might make a change after five seasons of good and bad from their talented signal-caller. Cutler clearly thrived under first-year coach Marc Trestman and now has some of the best complements on offense he's had since arriving in Chicago in 2009. ''It's not always been easy,'' Cutler said.