The seven delistees also include Simon Phillips, Mitch Banner and rookies Daniel Webb, Mitch Curnow and Jarrad Irons.
"David embraced his new opportunity from the outset and is a player who won't be forgotten by Port Adelaide supporters who admire his flair as a midfielder and willingness to take on opponents and attack the game," Power football operations manager Peter Rohde said.
"He's popular within the club as well and is respected for his work ethic, ability to overcome serious injuries, his personality and what he does off the field to promote football in our multicultural community."