Daniel Jackson, Richmond's No.1 match-up for Gary Ablett, could miss the round-one AFL game against Gold Coast.
Collingwood AFL president Eddie McGuire says coach Nathan Buckley's contract extension has removed the speculation over his future.
Nathan Buckley will coach Collingwood through to the end of 2016, with the club announcing a two-year contract extension.
Collingwood vs Fremantle
GWS Giants vs Sydney Swans
Gold Coast Suns vs Richmond
Carlton vs Port Adelaide