Chris Tarrant's bid to return to Melbourne has fallen on deaf ears at Fremantle, with both coach Mark Harvey and chief executive Steve Rosich declaring the contracted defender won't be going anywhere at trade week.

Tarrant has one more year to run on his lucrative four-year deal but is keen to move back to Victoria for family reasons.

However, the Dockers are unwilling to negotiate, declaring it would take an extraordinary deal for the club to even consider a trade.

"It's unlikely. Chris is contracted and enjoying his time at Fremantle Football Club and playing good football, particularly this year," Rosich said on Wednesday.

"He's emerged as a very valuable key defender ... it would have to take something unlikely to be put forward (for a deal to be done)."

Tarrant, who made a name for himself as a key forward during his 161 games with Collingwood, struggled in his first two years at the Dockers, booting just 56 goals in 37 games.

But he has been a revelation this year after making a surprise move to defence, shutting down some of the best talls and smalls of the competition.

The 28-year-old was unlucky not to be named in the preliminary 40-man All-Australian squad and Harvey said he was intent on keeping his trump defender.

"There's been a lot the club's done for Chris Tarrant to get him here and to keep him here and he will be playing the length of his contract," Harvey told the AFL website.

"I'd like to think that Chris understands the coaches have found him a new lease on life.

"He needs to understand that.

"He's contracted to Fremantle and he will be playing at Fremantle next year.

"When you commit to a four-year contract you commit to a four-year contract.

"He won't be playing for any other club next year."

Meanwhile, Fremantle's off-field fortunes continue to blossom with the club securing energy heavyweight Woodside as their new major sponsor.

Woodside have agreed to a three-year deal believed to be worth around $1 million a season, replacing LG as the club's major sponsor.

LG will still sponsor the club at a lower level.

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