The Western Bulldogs have announced three further list changes for the 2021 season.

Jackson Trengove, Matt Suckling and Callum Porter have all been informed that they won't be offered new contracts.

Trengove played 32 of his 153 AFL games for the Bulldogs after crossing from Port Adelaide at the end of 2017.

Suckling, a dual premiership player at Hawthorn, has made 171 senior appearances for the Hawks the Bulldogs, joining Whitten Oval at the end of 2015.

Porter made his AFL debut in 2020 in his sole appearance at senior level.

Bulldogs General Manager of List and Recruiting Sam Power thanked the trio for their contributions to the club.

“These are difficult decisions to make, because we’re dealing with quality individuals who cannot be questioned for their hard work and dedication,” Power told the club website.

“They represented the club with pride and gave their all, and we are grateful for their efforts.

“We wish them every success for whatever their futures hold, and they know they are always welcome back at the club.”

They join Billy Gowers, Fergus Greene, Brad Lynch, retiree Tory Dickson and Kangaroos-bound Lachie Young in departing the club.