In Canadian football, there is a five yard restraining zone around the first Team B player to touch the ball on any kick from scrimmage.
Only the kicker and any player positioned behind the kicker while the ball is kicked may be inside that 5 yard zone while the ball is touched. These players are referred to as "onside" players. Onside players may recover the kick, or may legally be within the restraining zone.
Any other player is considered "offside" If the offside player is in the restraining zone while Team B touches the ball, or if an offside player is the first person to touch the ball the resulting foul is called "no yards" It's a 15 yard penalty.
Now, in the CFL and OUA they have a bounce back rule that I'm not going to get into.
I hope that clears things up
