Football seems to be a long ways away, but I promise that it isn't. Before you know it, we will have free agency, the NFL Draft, organized team activities and then boom, preseason. Dynasty fantasy football is going to be won in the offseason. Having the foresight to project how teams will behave in NFL free agency and during the NFL Draft will provide you buying and selling opportunities that your league mates won't have caught up to yet. With that idea in mind, these are four transaction ideas for dynasty fantasy football to help you win your league in 2019 and beyond.