I hope we arent trying to get him or Kelly, I can only think of 2 big trades Hawks: Burgoyne and Dogs: Boyd (arguably would have won anyway and forced by Griffen walking) to teams who then went on to win a flag, it's the smart trades for a player on the outer at there current side or the free agent since you give nothing up in return you want to go after. The hawks are the best example of this, they trageted free agents and players needing a 2nd chance. That or you draft a premiership team like the cats.
You don't have to look far for the converse. Swans recently with Tippett and Buddy, Cats with Danger, Blues with Daisy and Judd, Pies with Adam Treloar, Taylor Adams, Tigers with Prestia, Lions with Fevola, us with Mitch Clarke, Hawks this year for O'meara. I'm sure there are many more but you get the point