Schwab was one of tyhe key figures who set up the PFA in 1993 and has played a growing role in the future direction of football, despite missing out on a role with the FFA at the creation of the A-League in 2005.

However he will still retain links with the PFA as legal counsel for their upcoming collective bargaining negotiations for the A-League, Socceroo and Matildas.

He will also help the PFA with strategy and communications and represent the PFA at FIFPro and the FIFA Dispute Resolution Chamber and the Australian Athletes Alliance.

"My decision has been made for a variety of personal and professional reasons, and my desire to work more strategically," he said today.

" I plan to establish my own legal and advisory practice which specialises in the industrial relations, employment and regulatory aspects of professional team sports.

"The cause of player rights will remain central to me."

Schwab believes he has left behind a lasting legacy at the PFA since he rejoined in 2006.

"The PFA now has a strong platform on which to build despite the current challenges confronting the game," he said.

He cited the players' union's respect and credibility in the media and the football community as vital for the group as well as staunch defence of players and player development programs.

He added: "None of the PFA's achievements would have been possible without the support and engagement of the players and some outstanding staff members and advisors.

"I would particularly like to acknowledge Simon Colosimo, John Poulakakis, Will Hastie and Laura Sigal who have driven the PFA with me in recent years.

"I look forward to continuing to work with you for the benefit of the players and the game."

PFA President Simon Colosimo said, “Brendan, at various critical stages of the PFA’s history, has arguably contributed more to the wellbeing of the PFA and the players than any other individual.

"Not only do the players now enjoy much improved conditions but the PFA has grown to reflect their modern day needs and is now in a strong financial position.

"Brendan has also been a great champion of Australian football with an intense intellect and passion for the game.

“In his work for the PFA and the players, Brendan has upheld our 5 values: respect, intelligence, courage, world class and trust. For this, the players thank him.”