Geelong are set for Thursday night's blockbuster clash at the MCG, making just the one change as they prepare to take on Collingwood in a crucial match for both clubs. 

Experienced forward Jack Martin returns to the line-up after missing the last two weeks, set to play his first AFL match since the Round 18 clash against the GWS Giants. 

Martin featured for the VFL Cats last Saturday and impressed in their win over Casey, collecting 14 disposals and kicking a game-high four goals before earning a recall to tackle the Magpies. 

The lone out for Geelong is Patrick Dangerfield who will be managed this week, with the skipper set to miss his first game since the Cats' Gather Round clash with West Coast.

It looms as a season-defining clash on Thursday night as the Cats venture back to the MCG for the second straight week, set to face Collingwood from 7.30pm AEST. 

The two teams currently occupy eighth and ninth positions on the ladder, with the winner of Thursday's clash to remain within striking distance of the top six, only four rounds out from the conclusion of the home and away season. 

Round 21 will mark Geelong's final game at the MCG in the regular season, with two games at GMHBA Stadium and one at Marvel Stadium remaining in the final three weeks before Finals. 

Tickets are available through Ticketek for the blockbuster clash, make sure to secure your seat and show your support to help spur on the Cats in the monumental match. 

The match will also be broadcast on Channel 7, Fox Footy and streamed through Kayo, or tune into K rock to listen to all the action from the MCG.