Brisbane Lions fans need not be concerned about the inclusion of superstars Jonathan Brown and Simon Black on the AFL's list of Free Agents for 2013.

That was the message from Lions General Manager - Football Operations, Dean Warren, who clarified the Club's position following Friday's announcement from the AFL.

“Jonathan and Simon have been outstanding and loyal servants of the Club for a long period of time now, and we don’t have any concerns of that changing,” Warren said.

“They’re both excited about being a part of what is a young and developing list."

“Both the players and the Club have agreed to terms in their contracts that will trigger extensions for 2013, and that is where some confusion around this list lies."

“They’re committed to being at the Lions in 2013 which is important for our fans to know.”

The list also revealed Lions veteran Ash McGrath, 28, will be an unrestricted Free Agent in 2013, with Josh Drummond and Jed Adcock restricted Free Agents.

To understand how Free Agency will work, please continue reading below:

HOW THE SYSTEM OPERATES FOR ALL PLAYERS ACROSS THE COMPETITION -

A player has served seven seasons or less of AFL football at one club, and is now out of contract.
The player is not eligible for free agency if his club wishes to retain him. He may only move clubs via a trade or the Draft. If he delists himself, he is subject to the Draft, and may be selected by any club.

A player has served seven seasons or less of AFL football at one club, and has been delisted by his club.
The player is a Free Agent and is eligible to field offers from all rival AFL clubs.
The player must decide on the best offer of his choice from one rival club.
The player can move AUTOMATICALLY to the new club of his choice.
His original club, which chose to delist him, does not receive any compensation pick for the loss of the player.

A player has served eight or more seasons of AFL football at one club, is one of the top 25 per cent highest-paid players at his club, and is now out of contract for the first time since March 1 in his eighth season. (Restricted Free Agent) The player is eligible to field offers from all rival AFL clubs.
If he wishes to change clubs, the player must decide on the best offer of his choice from one rival club.
His club has the right to match the presented offer.
If the club matches the offer, he may choose to remain with his original club, seek a trade or enter the Draft.
If the club does not or can not match the offer, the player can move to the new club of his choice.
His original club will receive a compensation pick for the loss of the player, on an AFL-determined formula to apply where clubs lose more free agents than they gain in any single transfer period.

A player has served eight or more seasons of AFL football at one club, is NOT one of the top 25 per cent highest-paid players at his club, and is now out of contract for the first time since reaching eight seasons of service. (Unrestricted Free Agent)
The player is eligible to field offers from all rival AFL clubs.
If he wishes to change clubs, the player must decide on the best offer of his choice from one rival club.
His club does NOT have the right to match the presented offer, and the player can move AUTOMATICALLY to the new club of his choice.
His original club will receive a compensation pick for the loss of the player, on an AFL-determined formula to apply where clubs lose more free agents than they gain in any single transfer period.

A player has served ten or more seasons of AFL football at one club, has already come out of contract once in the period after March 1 in his eighth season, and is now out of contract. (Unrestricted Free Agent)
The player is eligible to field offers from all rival clubs.
If he wishes to change clubs, the player must decide on the best offer of his choice from one rival club.
His club does NOT have the right to match the presented offer, and the player can move AUTOMATICALLY to the new club of his choice.
His original club will receive a compensation pick for the loss of the player, on an AFL-determined formula to apply where clubs lose more free agents than they gain in any single transfer period.