Cubs sign OF Ian Happ to 3-year extension worth $61M, sources say - ESPN
Why Cubs' Ian Happ, one year after demotion, looks primed to win center field job
Column: Pressure mounts on Chicago Cubs as deadline nears
Why the Chicago Cubs shouldn't extend Ian Happ before Opening Day - On Tap Sports Net
Ian Happ: Chicago Cubs left fielder wins Gold Glove
Ian Happ grand slam lifts Cubs past A's
The Rundown: Happ Extension Creates New Core, Hoyer 'Predicted' Epic Comeback Win, Rays Stay Undefeated - Cubs Insider
Cubs manager says struggling Ian Happ isn't a candidate for demotion - Chicago Sun-Times
Ian Happ, Cubs agree to 3-year extension
Cubs' Theo Epstein On Ian Happ's Demotion: 'Small Step Backward For A Big Step Forward
Cubs' Ian Happ - Los Angeles Times