This issue came up during recertification when talking about gaining an advantage by being in an offside position.How is parry defined as it applies to goalkeeper possession?
From Decision 2 in Law 12, it seems apparent that a parried ball by a goalkeeper constitutes possession. So if the ball was parried by a goalkeeper and next touched by a player who had been in an offside position when the shot was taken, it would seem that the player would not be offside.
The discussion then turned to what was a parry. Some thought a parry required that the ball be knocked to the ground while others thought that any deliberate (and controlled) touch of the ball by the keeper was a parry (as in fisting or punching a ball away from the goal).
Laws, ATR and Q&A were checked but no reference seems to exist. Can you provide guidance?
USSF answer (December 12, 2006):
See the definition of “possession” in Law 12, IFAB Decision 2:
“The goalkeeper is considered to be in control of the ball by touching it with any part of his hand or arms. Possession of the ball includes the goalkeeper deliberately parrying the ball, but does not include the circumstances where, in the opinion of the referee, the ball rebounds accidentally from the goalkeeper, for example after he has made a save.”
To “parry” the ball is to handle the ball deliberately, pushing it to a place where the goalkeeper may play it to more advantage. By parrying the ball, the goalkeeper has done two things: (1) established possession and (2) given up possession. The ball is now free for all to play. The six-second rule has no further application in this situation.
So, in answer to your question, no, if the goalkeeper has clearly established possession by parrying the ball, rather than simply deflecting it in a “save,” then the opposing player cannot be declared offside.