Fantasy Football offseason analysis, dynasty buys and sells, Philip Rivers gone from Chargers

Jake Ciely brings on John Daigle of Rotoworld to talk offseason fantasy football running backs. Should we buy or sell on Marlon Mack, Leonard Fournette, Le'Veon Bell, Miles Sanders and more? What should we expect for the Los Angeles Chargers without Philip Rivers, and is Saquon Barkley still the No. 2 running back?