Sydney revealed on Wednesday that Parker will remain with the Bloods for a further four seasons, likely keeping the 28-year-old a Swan for life.
Parker has played 235 games with Sydney since making his debut in 2011 and was a member of the Swans' premiership side in his second season in the Harbour City.
As of last week, the Dandenong Stingrays product is a three-time Bob Skilton medallist, joining rare air in the Swans' history.
An All-Australian and key member of Sydney's recent success over the past decade, Parker expressed his excitement to commit to the Swans.
“I absolutely love the club and I wanted to be part of the long term and really drive the group through this next period,” he said.
“I’m really excited about what the future looks like. We have a great group and we have taken some big steps forward this year.
“The group we’ve got coming through is so exciting. We’ve got some young guys who are just starting out in their careers and you ride the bumps with them, you ride the exciting times with them, and it’s such good fun.
“There is no better place than the SCG when it’s packed out and rocking.
“I know it’s been a tough year for the members and fans but we can’t thank them enough for the support and the love we have felt while we were on the road. We can’t wait to get back in front of the red and white fans."