FREE agent Jasper Pittard has recommitted to Port Adelaide for three more years despite keen interest from Victorian clubs.

Pittard was set to become an unrestricted free agent at the end of this season and had been approached by clubs in his home state, with Essendon believed to have been his most ardent suitor.

AFL.com.au can confirm, however, the former Geelong Falcon is on the verge of re-signing with the Power until the end of 2020, with an official announcement expected this week.

Match preview: Port Adelaide v Gold Coast

Pittard, 26, enjoyed a career-best season in 2016, when his dashing play off half-back earned him a spot in the preliminary All Australian squad and third place in Port's best and fairest award.

The defender has struggled to replicate that form this year after an injury-delayed start to the season.

Dropped to the SANFL twice in 2017, Pittard has found better form since his recall for the Power's round 20 game against St Kilda.

Despite missing seven games this season, Pittard is second at Port for rebound 50s (60) and sixth for one-percenters (55).

Pittard's impending contract extension will leave tall utility Jackson Trengove as Port's only remaining 2017 free agent.

Trengove, 26, appeared highly likely to re-sign with the Power earlier this year, but the Victorian's future has become more clouded recently.

Dropped after Port's demoralising loss to Adelaide in round 20, Trengove has spent the past two weeks in the SANFL, where he has been best on the ground in both games.

The former Calder Cannon has attracted interest from Victorian clubs, most notably the Western Bulldogs and Melbourne, with his ability to play at both ends of the ground and as a pinch-hitting ruckman making him an attractive target.

It's understood Trengove remains a required player at Alberton Oval and, as a restricted free agent, Port can match any rival offer tabled for him.