Here's an example of a simple but effective 2v1 drill to practice the offload. Players concentrate on staying strong and getting their shoulders through contact, with the ball remaining in two hands. Support players communicate their position and time their run.
Practice the different options in recycling the ball. A lot of the time, the ball will be tied up and an offload won't be on.
Develop this drill by allowing the players to call how the ball should be played, and for their teammates to react.