Midfielder Taylor Adams will miss Sunday's clash with West Coast after succumbing to a knee injury.
Adams, who collected 36 disposals in last week's 69-point win over Essendon, was withdrawn from the team on Friday afternoon.
He has been replaced in the squad by the untried Tom Phillips.
Collingwood will finalise its 22-man team at 5pm on Friday.
Collingwood v West Coast
Sunday 1 May
Domain Stadium, Perth
2.40pm WST
Collingwood
B: Jack Frost, Nathan Brown, Tom Langdon
HB: Adam Oxley, Ben Reid, Josh Smith
C: Jack Crisp, Adam Treloar, Steele Sidebottom
HF: Jordan De Goey, Darcy Moore, Levi Greenwood
F: Alex Fasolo, Mason Cox, Jeremy Howe
Foll: Brodie Grundy, Scott Pendlebury, Jarryd Blair
Int (from): James Aish, Matthew Goodyear, Ben Sinclair, Tim Broomhead, Alan Toovey, Brayden Maynard, Tom Phillips
IN: Tim Broomhead, Matthew Goodyear, Tom Langdon, Tom Phillips, Ben Sinclair
OUT: Taylor Adams (knee), Travis Varcoe (hamstring)
NEW: Tom Phillips (19, Oakleigh U18)
West Coast
B: Brad Sheppard, Eric MacKenzie, Will Schofield
HB: Sharrod Wellingham, Jeremy McGovern, Shannon Hurn
C: Chris Masten, Matt Priddis, Elliot Yeo
HF: Mark LeCras, Jack Darling, Lewis Jetta
F: Jamie Cripps, Josh Kennedy, Scott Lycett
Foll: Nic Naitanui, Andrew Gaff, Luke Shuey
Int (from): Jack Reddan, Liam Duggan, Sam Butler, Thomas Cole, Josh Hill, Mark Hutchings, Patrick McGinnity
Late change: Adams to miss
Midfielder Taylor Adams will miss Sunday's clash with West Coast after succumbing to a knee injury.