West Coast will wait until the end of the AFL season before deciding whether coach John Worsfold deserves to have his contract extended.

Worsfold, whose current deal runs out at the end of the year, started the season under immense pressure to produce results following last year's disastrous wooden spoon campaign.

The Eagles have shown dramatic improvement this season to sit a respectable 10th on the table with a 3-3 win-loss record going into Sunday's western derby against arch rivals Fremantle.

But despite the on-field improvement, West Coast chief executive Trevor Nisbett said both Worsfold and the club were content to wait until the end of the season before discussing the possibility of a new deal.

"John's aware of his position, it will happen at the end of the year," Nisbett said on Monday after announcing SGIO had re-signed as the club's major co-sponsor for a further three years.

"It's a mutual commitment because of where we've been in the last three seasons.

"John and the board have met on several occasions over the last couple of years and that's the decision we've made."

A chorus of Eagles fans were calling for Worsfold to be sacked last season after the club won a paltry four games to miss the finals for the third year straight.

But the 2006 premiership coach and two-time premiership captain has masterminded a remarkable turnaround this season, with a new zonal game plan and greater intensity helping the club become the league's most improved team in 2011.

"John's working with the players to ensure we get the best performance week in, week out and to date we've been extremely competitive," Nisbett said.

"It makes John's position a little easier because he's seeing good performances from the players he believes in.

"I think the players themselves have taken responsibility for their performances.

"Our guys have really taken it up another notch.

"They've been totally committed ... to the game plan, the coach and certainly themselves.

"We're three and three so we've got a lot of work to do yet. But our performances have been much better."

West Coast have lost their past seven derbies to Fremantle and Nisbett said it was crucial for the Eagles to break that losing trend.

"I think it's important in the context of our year. Being 3-3, we need to go 4-3. I think it makes it a bigger game for us than it probably has been in previous years," he said.

Meanwhile, Nisbett said the club was desperate to upgrade their outdated training facilities, which last received a makeover in 1999.

West Coast's preferred option is to keep their training premises at Patersons Stadium, irrespective of where the State Government decides to build Perth's new multi-purpose stadium.

"The preferred option is to keep Subiaco as an oval and stay at the ground if we could," Nisbett said.

"But we've got other options."

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