Fallout for Gaff and future decisions:
For the coward punch (or since Danny Green is a WC supporter, a 'remorseful, unintentional, accidental, love tap'), 6-8 weeks based on precedent.
There will not be any police action whether it is warranted (on legal grounds, not emotional opinion) or not.
Freo will hate West Coast more than ever, if that is possible. Freo fans next derby will even out-boo West Coast, if that is possible.
The game will go on the rest of the year, just not with Brayshaw or Gaff playing in it.
Brayshaw's Dad will give Adam Simpson a piece of his mind next AFL coaches association meeting.
Gaff will probably not go to the Melbourne FC (not that they could have much cap space left anyway).
Hamish Brayshaw will no longer be friends with Gaff, but the rest of West Coast (aided by their "Principal Media Partner" sponsors, The West Australian Newspapers and Channel 7) "will wrap their arms around Gaff" (some cynical people might incorrectly say: in an supreme effort to keep Gaff from signing with a Melbourne club at the end of the year), the remorseful victim with good character, and 'good bloke' that he is, and help him get through this tough time, no thanks to Brayshaw intentionally ducking his head to cause severe contact with Gaff's slightly clenched hand that was simply reaching for the ball which he believed was somewhere in the vicinity of Brayshaw's chest. Then they will help counsel Gaff through the immediate remorse he felt afterwards for the downed Brayshaw when he ran straight down field and continued playing. Then the further remorse when he cried on the bench realising that Brayshaw's ducking into his outstretched hand while he was innocently trying to shake off some wrist cramp, will now cause some damage to his reputation and Brownlow chances (Mitchell chuckles...)
Gaff will leave WC at the end of the year, no longer able to walk the streets of Perth without inciting angry hecklers, Fremantle will be off limits altogether, and not wanting to play Freo twice each year for the rest of his career in Perth and risk some other spiteful Dockers player ducking their head anywhere near his soft, innocent, good blokey, outstretched hands. On the other hand, he will miss the cuddles from Simpson which does make him feel all warm and special and innocenty.