Football names don't get much bigger than David Beckham and his former Manchester United teammate Mark Bosnich says everything should be done to secure the global superstar's services in the A-League.Football Federation Australia (FFA) on Friday confirmed it had received an approach by Beckham's management expressing interest in the former England skipper playing in the A-League this season.Already boasting the likes of Italian star Alessandro Del Piero, Liverpool legend Emile Heskey and Japanese international Shinji Ono, Beckham would be the biggest coup in the history of the league."The approach from David Beckham's people is another sign of how much the A-League has grown in stature on a global basis," said an FFA spokesman on Friday."But this approach remains at a very preliminary stage."The ex-Manchester United great is reportedly being offered around to several clubs with the possibility of joining on a 10-game guest stint but Bosnich says Beckham is also considering a long-term deal.With the Major League Soccer (MLS) competition in America finishing in a fortnight, the timing would work for the 37-year-old LA Galaxy star."There's a golden opportunity right now to secure David's services in Australia, not just for 10 games but for a considerable period of time," Bosnich said on Friday."He is interested. He wants to come down ... so let's do everything we can to make it happen."There's a small window of opportunity with these things and you've got to carpe diem, seize the day so to speak."Bosnich, who played at Manchester United from 1999-2001, knows first-hand what Beckham is capable of."He's in outstanding condition, and if there's anyone you would want in your team to have the ball when you're 1-0 down with 10 minutes to go away from home, it's David Beckham."The move, however, is subject to financial backing by the FFA, with new boss David Gallop needing to decide whether to support it.It's understood Beckham, who is the third-highest earner in the MLS at $US4m ($A3.9) per season, wouldn't demand a massive pay cheque and would be happy to receive compensation in the form of what will no doubt be lucrative commercial and merchandise arrangements.Melbourne Victory, however, have no desire in having the football legend among their ranks, with coach Ange Postecoglou welcoming the news of his possible signing but denying any interest."That's great if he is. Would we be interested? Nah," he said.With Del Piero already at Sydney FC, fellow big city clubs like Western Sydney and Melbourne Heart have emerged as the early favourites to host the former Real Madrid playmaker with Brisbane Roar another possibility.Working in the Wanderers' favour is that FFA owns the club, meaning chairman Frank Lowy could stump up the cash.But Wanderers boss Lyall Gorman has denied they are in the box seat to secure the star."We haven't been approached formally or informally. This was all news to me," he told AAP on Friday."But if any approach was made we'd do what we'd do with any approach and asses it from our current football needs then from a commercial aspect."