Some links from a quick google.
https://www.perthnow.com.au/sport/a...p-tim-kelly-trade-next-year-ng-b88994967z.amp
https://www.google.com.au/amp/s/www...er/tim-kelly-fails-to-secure-a-trade-home/amp
This is a good source too:
Geelong only asked for that in the end because West Coast could not procure a top 10 pick which is what Geelong had always asked for. Not sure how hard West Coast tried but they could have packaged their two second rounders for a mid first. Think they may have tried to do the deal Sydney did with Adelaide and Carlton for pick 13 but it was already too far down the road.