Jackson Trengove off to Western Bulldogs as free agency opens

Jackson Trengove Will Russell/AFL Media/Getty Images

Western Bulldogs have lodged paperwork to claim Port Adelaide defender Jackson Trengove in the first transaction of this year's AFL free agency period.

The Bulldogs acted swiftly to claim the restricted free agent soon after the free agency period started at 9am Friday.

The Power have three days to decide if they will match the Bulldogs' four-year contract offer to Trengove but that is considered unlikely.

The 26-year-old found himself out of favour with Power coach Ken Hinkley late in the season and was unable to earn an AFL recall after being dropped ahead of round 21.

"It was extremely hard (to leave), but towards the end of the year (the decision) was probably made for me when I was dropped," Trengove told AFL Trade Radio.

"I was left out in a game where I thought I could help the team out.

"As hard as it was I think the timing was right to come back home."

Trengove was the 22nd overall pick at the 2008 draft and has played 153 games for Port.

At 197cm, Trengove is a versatile big man who can fill several roles for the Dogs, but is likely to spend most of his time in defence.

"I'm not 100% sure where my best footy will be for the Dogs yet," he said.

"I had some good conversations with Luke Beveridge and I think I'll play in a number of positions with the Doggies, probably tie down one of those key positions.

"I think I can still be effective as that second ruckman and give a good chop out, I think that's an area I might be able to have a look at as well as down back."

It's not all doom and gloom for the Power, with former Brisbane skipper Tom Rockliff poised to join the club.

The 27-year-old is a restricted free agent, which means the Lions can match any free agency offer made to him, but he has almost certainly played his last game for the club.

Rockliff, who was stripped of the Lions captaincy last year, came close to leaving the club during the 2016 trade period.

He was heavily courted by Carlton in recent weeks but opted for Port with an eye on playing finals.

Geelong duo Daniel Menzel (unrestricted) and Steven Motlop (restricted) and North Melbourne's Scott Thompson (restricted) are other notable players in a thin free agency crop this year.

The free agency period ends at 5pm on Sunday, October 15.