I copied and pasted this from the collingwood website, deleted the things I thought were boring. The full list of dates is here
http://www.collingwoodfc.com.au/news/2015-09-11/magpies-begin-the-offseason-2015
2015 Off-Season Calendar
Friday 9 October - AFL Restricted Free Agency Offer and Unrestricted Free Agency Period Commences
Monday 12 October 10am - AFL Trade Period Commences
Sunday 18 October 5pm - Close of AFL Restricted Free Agency Offer and Unrestricted Free Agency Period.
Wednesday 21 October - AFL Restricted Free Agency Matching Offer 3 Day Period Ends
Thursday 22 October 2pm – AFL Trade Period Closes
Tuesday 24 November - National Draft (Adelaide Convention Centre) including Father/Son & Academy Players Bidding.
Friday 27 November 11am - Pre-Season Draft (Telstra Webex)
Friday 27 November 11:05am - Notification of Pre-Selected Rookies if not selected in the Pre-Season Draft.
Friday 27 November 11:10am - Rookie Draft (Telstra Webex)
Tuesday 1 December 2pm - Final AFL Club List Lodgement; Final TPP Pre-Season Estimates