Been two years out now since I've torn my ACL and Meniscus. Just recently started training getting ready for a Sunday summer league. Using weight training, squats, leg press, bench, and core workouts.
For endurance, I am currently using this App called ZombieRun. Fantastic. Actually motivates me to run more often considering its entertainment factor. Perfect for football conditioning considering there are moments where you have intervals of sprints (where zombies are near you) and back to a normal steady pace jog (when you escape the zombies). You can adjust it to your liking so FIIT training works perfectly.