PORT Adelaide coach Matthew Primus says the Power know which players they'll target in October's free agency period, but won't reveal who.

Primus maintained his list had developed in 2012 and would do so again in 2013, but admitted the club would seek to improve its prospects through trading and free agency.

[ Related: All the free agents around the league - have your say ]

With half its list under 23 years old, Port could benefit from bringing in experienced free agents.

But, unsurprisingly, Primus wouldn't reveal the names of players the club will chase.

"We'd like to keep that to ourselves," Primus laughed.

"It's going to play out a long time … especially if you're not playing finals … because free agency's not until October and it's going to be three weeks in October.

"There's a lot of work to be done and there won't be many calls made until that time I wouldn't have thought.

"Our list managers are definitely looking at that."

While October shapes as an important month for the Power, Primus insisted more immediate issues were at hand; Sunday's match against Fremantle the most pressing.

Under Ross Lyon, Fremantle have developed into one of the stingiest sides in the AFL, averaging the third-lowest opposition score a match.

Freo also thrives on contested football, totalling the third-highest number of contested possessions in the competition, behind the Swans and Adelaide.

[ Related: Pfeiffer set to play ]

But rather than get into a contested slog, Primus said he wanted to open Fremantle up on the break and move the ball "as quick as you can".

 "We have a great challenge against Fremantle, against a team coached by Ross [Lyon], who are difficult to play against, defensively minded and we're looking forward to testing ourselves against that," he said.

"We also want to try and stretch it out too and make it a quicker game too.
  b
"Both teams are playing a little differently and we want to be good in the contested situations, but try and move the ball as quick as you can too against them."

Key to shutting Fremantle down will be preventing its skipper, Matthew Pavlich, from influencing the game as much as he did in the sides' last meeting in round seven.

He took 10 marks and booted four goals in that game and added seven more to his tally last week against the Giants.

Primus said trusted defender Alipate Carlile would be given the daunting task of stopping the superstar forward's dominance.

"He's (Carlile) been in really good form and obviously Pavlich is going as good as anyone in the key forward stakes," he said.

"It's a great opportunity for 'Bobby' to continue his great form and test himself out against a guy who's hitting the scoreboard pretty well and a number one target."

 Harry Thring covers Port Adelaide news for AFL.com.au. Follow him on Twitter: @AFL_Harry