Geelong are in the midst of a salary-cap clear-out as they prepare to launch a raid of Greater Western Sydney for Devon Smith and Jacob Hopper.

The Cats are aiming to bolster their midfield depth with the Giants pair and also remain supremely confident of bringing Gary Ablett back home for the 2018 season.

Targets: Geelong are aiming to bolster their midfield depth with Gary Ablett and Giants pair Jacob Hopper and Devon Smith. Credit:AAP

Out-of-contract forwards Daniel Menzel and Steven Motlop are yet to be offered new deals, with their combined contracts believed to be worth just under $1 million.

Salary-cap space may be further opened up by the possible retirements of veteran defenders Andrew Mackie and Tom Lonergan, with at least one and potentially both likely to hang up the boots at season's end.