The NFL and its players union have agreed to conduct “virtual” offseason workout programs until every team is permitted to open its facilities. Teams can hold classroom instruction, workouts and non-football educational programs using online platforms. That's according to a memo sent to the teams that was obtained by The Associated Press. The three-week virtual offseason starts on April 20 and runs through May 15. Teams with a new head coach have the option to also hold a fourth week for a voluntary veterans minicamp.