Collingwood receives Adam Treloar and pick No. 28.
In exchange, GWS receive pick No. 7, 62 and Collingwood’s 2016 first round pick.
Treloar has become a star of the competition over the past two season, averaging 27.5 disposals per game in 2015 and 27.6 in 2014.
He was ranked No. 1 at the Giants and in top 20 in the league for disposals in 2015. He also averaged 5.3 tackles per game this season and 3.3 inside 50s.
The 22-year-old has played 79 games with the Giants since making his debut in 2012.