PORT Adelaide premiership hero Chad Cornes says he leaves the Power on good terms after a final-day trade was arranged to send the 32-year-old to Greater Western Sydney, where he will extend his AFL career into a 15th season.

In a deal that leaves Port Adelaide open to future Greater Western Sydney raids on its uncontracted players, Cornes and fellow Power veteran Dean Brogan were packaged with NAB AFL Draft selection No.69 and sent to the Giants on Monday in exchange for pick No.49.

Brogan and Cornes were unlikely to be drafted by the Giants if Port Adelaide refused a trade, as it would have stopped the expansion club from signing uncontracted Power players next year.  

Cornes, who announced his retirement in August before being lured into another season by Giants list manager Stephen Silvagni, said he was grateful Port Adelaide had allowed him to extend his 239-game career elsewhere.

"It's sort of been a bit up in the air the last couple of days, not knowing if it was going to go through, so to have it done today is a relief," Cornes told AFL.com.au's Trade Week Radio on Monday. 

"I tried to end on good terms with everyone at Port and I think I did that. I leave there with no hard feelings.

"I loved my time there, everyone was really good to me [and] now I move onto a new chapter."

Cornes has agreed to a unique deal with Greater Western Sydney that will see him play one season before taking up a role in the club's sports science department.  

He said it was an area of the game he was passionate about and he would combine university study with his role at the club.

"I'll work pretty closely with (sports science manager) John Quinn and he'll be a bit of a mentor to me and we'll go from there," Cornes said.

"That's what I wanted to do when I retired, so to have a two-year deal, not just the one, is a bit of a bonus."

As well as securing Cornes and Brogan, the Giants also confirmed a trade for Brisbane Lions veteran Luke Power on Monday, with the three-time premiership midfielder set to combine his playing duties with a coaching role in 2012.  

Silvagni said Power would be the club's forward line coach next season, while Brogan would be involved in the football department as a ruck coach. 

"This set up will be similar to the playing coach role of [former Melbourne midfielder] James McDonald, which we announced earlier this year," the list manager said. "It’s an opportunity for these guys to develop their off-field skills while being leaders on the field.
 
“We believe it’s an innovative concept that demonstrates our commitment to doing things differently to develop a successful football club.

"Dean, Luke and Chad have five premiership medals between them and have played 693 games, which is a fantastic achievement."