Footwork and Replaying

The footwork rule explained

What the rule book says:

A player can receive the ball:

1. With both feet grounded or jump to catch the ball and land on two feet simultaneously. You may then take a step in any direction with one foot (but not both) and pivot on the spot with the other foot. Once one foot is moved, the other is considered to be the landing foot.
2. With one foot grounded or jump to catch the ball and land on one foot. The landing foot cannot be moved, other than to pivot on the spot, whilst the other foot can be moved in any direction. Once the landing foot is lifted, it must not be re-grounded until the ball is released.

Hopping or dragging the landing foot is not allowed.

If you break the footwork rule, a free pass will be awarded to the opposing team

Note: Your landing foot is considered to be the first foot in which you land and can be lifted but not replanted whilst you have possession of the ball. Your other foot may move any number of times in any direction - but taking into account the 3 second rule. You may take a step in any direction, lifting your landing foot and balancing on your other leg. Footwork will be penalised if you re-plant your foot before releasing the ball during a pass or shot.

More from the rule book:

Footwork in the centre circle

The footwork rule still applies in the centre circle. As soon as the Centre steps into the circle, their leading leg becomes their landing foot and the footwork rule then applies. That is, if they lift or move their landing foot and place it back down again, a free pass will be awarded to the opposing team due to footwork.