West Coast premiership player Willie Rioli will miss the next five weeks due to bone stress in his left foot.

Rioli was initially a week-by-week proposition, although the Eagles have now put a timeframe on his recovery after suffering the injury at training a week before round one.

โ€œWillieโ€™s got some bone stress in his foot which has been problematic,โ€ General manager of football Craig Vozzo told the club's website.

โ€œIt is resolving itself from a pain perspective, but itโ€™s a really delicate one that we need to treat accordingly. We re-scanned it recently and the doctorโ€™s advice is that we give it more time to settle.

โ€œWillie will be doing some aerobic training and a lot of off-legs stuff. Weโ€™ll have a graduated build up from here, which is quite conservative given the nature of the injury.โ€

Premiership teammate Liam Duggan will also miss this weekend's grand final rematch with Collingwood, although according to Vozzo, he should return the following week for the derby.

โ€œDuggo suffered an MCL strain of his knee. He played out the game really strongly, but unfortunately coming into Sunday there was a bit of swelling and it probably hasnโ€™t settled as quickly as we liked,โ€ Vozzo told westcoasteagles.com.au.

โ€œHeโ€™ll need to miss a week this week and hopefully we can fast-track him from there.โ€