Essendon forward Angus Monfries will return to his home state and play for Port Adelaide in the first confirmed deal of the AFL trade period.
The Bombers will gain pick No.48 for Monfries, who had played 150 games in eight seasons.
"I"ve loved playing for Essendon and I sincerely thank everyone there for the opportunities they've given me," Monfries said.
"I will miss Essendon, but it will be great to come home and play in front of my family and friends and help Port Adelaide get back to where it wants to be.
"That challenge is a big part of the appeal for me.
"I am someone who likes to get the best out of themselves and coming to Port Adelaide I will work to get more opportunities to do that."
Monfries said he was also looking to push up into the midfield.
He was a restricted free agent, but the Power were able to negotiate a trade with Essendon and he will join Port on a four-year deal.
It means Port will maximise the draft compensation they receive for losing Danyle Pearce to Fremantle and Troy Chaplin to Richmond last week through free agency.
The Bombers had put an offer to Monfries, but he decided to return to SA.
"Angus has been a fantastic player for Essendon and it's always sad to see a player of his calibre leave," coach James Hird said in a statement.
"At the end of the day Angus had an offer in front of him that we believe truly reflected his position at Essendon, but he has made a decision to secure his financial future and we have to respect that."
The Bombers recruited the 25-year-old with their first pick at No.14 in the 2004 national draft.