The new club has only seven months to find a name, a kit, a board, coaches, players, and a home stadium...and that's before they even kick a ball.

The PFA admits FFA is being ambitious, but vowed to do everything they can to meet the deadline,” said PFA CEO Brendan Schwab.

“FFA has set itself an enormous challenge to have the new club up and running in time for the 2012/13 A-League season

“However, with the support of the Australian government and strategic alignment with the grass roots bodies of New South Wales, it is a challenge the game can and simply must meet.

"Professional football is ultimately a club game. "Players play for clubs, and fans support them. The building of famous professional clubs in Australia is the game’s number one challenge."

The PFA identified the conversion of existing football fans as the key task facing the club and the FFA in the months ahead.

“As with all A-League clubs, the challenge will be to convert the massive participation base of Western Sydney and interest in the game into being avid fans of the new A-League club,” Schwab said.

“The level of interest and participation in Western Sydney should, if the local community is properly engaged, set the standard for the rest of the A-League competition.

“The PFA believes that, with at least ten teams for next season including two in both Sydney and Melbourne, the A-League is properly structured for the medium term and all involved in the game must make a steadfast commitment to the long term sustainability of all clubs."

A Western Sydney side was given the green light by the FFA for the second time today after the first attempt failed miserably when the bid failed to find funding.

The move into Sydney's west was delayed for years after the FFA initially gave Sydney FC exclusive rights to the city for five years to allow them to get established in the east.

But the botched expansion into Queensland and the economy downturn, followed by the failed first attempt to establish West Sydney Rovers has delayed the club until the A-League's eighth season.

Today though Sydney FC welcomed the announcement and insisted it was well-placed to survive the new challenge to its fanbase from the west.

Last season saw Sydney FC attendances increase by more than 40 percent and the club expects that to rise again next season thanks to the new derby fixture.

It also put in record hours for its community program, stretching across the city.

“A team from Western Sydney gives Sydney FC a real competitor and a true derby that can only be good for Sydney FC, the A-League and football in Sydney,” said Sydney FC Acting CEO Stefan Kamasz.

“We live in a city of five million people and we have always said there is room for two professional football teams.

“The long term viability of the A-League is dependant on two successful teams in Sydney and Sydney FC looks forward to the on-field and off-field rivalry that will be created."