Funnily enough there's a lot of coaches who could be in danger for 2018 IMO.
* Nathan Buckley - if he survives, he needs a Top 8 finish to keep the wolves at bay. Though I don't understand why you'd renew him only to sack him a year later unless things turn really sour (like bottom 4)
* Ross Lyon - another year like the last two then I'm not convinced his contract will save him. It gives him a bit of security but there's no reason why Freo wouldn't pay it out if they're still struggling.
* Leon Cameron - looking at the talent of that list, they should be only losing 1-3 games a season. This year hasn't been good enough AFAIC, and while injuries have been an issue, an underwhelming finals series will put him under pressure for 2018.
* Simon Goodwin - if Melbourne miss the 8 this year, then I think Goodwin needs a Top 8 finish to keep his job. While injuries have been an issue this year, I'm not convinced they're improving enough to suggest things are entirely on track.
* Brad Scott - all comes down to how confident North are in how much he's rebuilding. The list is in a bit of an awkward situation and he'll be in his 9th year; it might be time for a change.
* Ken Hinkley - needs a final win this year to keep the wolves at bay. Record has been uninspiring since 2014.
* Damien Hardwick - see Hinkley, except the 2014 bit.
* Alan Richardson - has been a coach for four years and they haven't made the 8 in that timeframe. To keep his job he probably needs a finals finish.
* Adam Simpson - list is starting to plummet and he hasn't done enough to really cement his position for a rebuild. A bad season and it might be his last.