The Lions and Giants have exchanged picks ahead of next month's National Draft, with Brisbane acquiring Port Adelaide's future third-round selection.

The trade will also see the Lions' 2021 third-round selection, Pick 54, head to Greater Western Sydney in the straight swap.

The Power's pick, which has stopped by the Harbour City on its way to Brisbane, was received by the Giants after a trade that saw Jeremy Finlayson head to Alberton.

The Giants now hold Picks 2, 13, 53, 54, 71 and 89 for the upcoming 2021 National Draft.