Geelong midfielder Scott Selwood will miss his side's clash with Sydney at GMHBA Stadium on Saturday afternoon.

Selwood will miss the game with concussion, after missing the second half of the Cats' big win over Port Adelaide last week following an incident with Power veteran Lindsay Thomas.

Thomas was subsequently suspended for three matches for the bump.

Jackson Thurlow will replace Selwood in the Cats' 22, while ruckman Zac Smith is named to the emergencies list.

Thurlow remains in the side after playing in last Saturday night's win, with the Cats making two changes.

Cory Gregson and Tom Hawkins return, while Daniel Menzel joins Selwood on the injury list.