EXCITING Sydney youngster Isaac Heeney will urge coach John Longmire to give him more time in the midfield after committing to a five-year contract extension.

Heeney, 20, who is now tied to the Swans until the end of 2022, played most of his first two seasons up forward, but was given time in his favourite midfield area towards the end of 2016.

"I'm out there running my butt off just to push and get that fitness under my belt to be able to run out a game in the midfield, so I'll be in Horse's (Swans coach John Longmire's) ear constantly just saying 'get me in there','" Heeney said.

"But whatever he chooses to do, I'm happy with."

Heeney predicted a bright future for Sydney who were beaten grand finalists in 2014 and 2016, but have made the finals for the last seven seasons and 13 of the past 14.

"We're of that belief going in to next year that hopefully we can go one step further," he said.

"The success they've had over the past 10, 15 years, has been up there with the best and I can't see that slipping in any way.

"I think the young group that we've got coming through can really push and make us hopefully get that elusive premiership."

Heeney was happy to get his deal done early and avoid potential distractions.

"There's always a little bit of speculation there and you just over-think things I think, so to get that under the belt and a bit of security there definitely eases me up a bit," he said.