By FOX SPORTS staff
The Red Devils, currently in Sydney, Australia for the second stop of their pre-season tour, have been dogged by transfer sagas involving Wayne Rooney and rumoured target Thiago Alcantara all summer.
Barcelona man Thiago has since agreed to a move to Bayern Munich, but Rooney's future continues to be a source of speculation despite manager David Moyes' insistence that the Englishman is not for sale.
With Manchester United top scorer Robin van Persie also joining up with the squad for the game against the Foxtel All-Stars, Postecoglou's side are likely to have their hands full during the exhibition match on Saturday.
However, out of all the big names expected to turn out for the Red Devils, it was Giggs whom the Melbourne Victory manager revered.
"One thing you have at a football club is that new faces are going to roll through the door every year, and they're going to challenge you as a footballer. Whether it's for your position, or for your stature at the club," Postecoglou pointed out to footballaustralia.com.au.
"Giggs has seen all that off, he's still at the forefront."
New United boss David Moyes is under pressure to nab the first win of his reign at the ANZ Stadium after the Premier League champions were beaten 1-0 by the Singha All Stars during his opening game in charge.
Advising the Scot to follow Sir Alex Ferguson's model during his reign, Postecoglou hopes the Red Devils continue to boast a core of dependable, passionate players.
"What's always struck me is that he (Ferguson) always had a local flavour to his team. There's always been that element - players whose one ambition in life has been to play for Manchester United. Even though he had the resources at his disposal to go out and buy the best in the world, he kept Giggs, he's kept Scholes, these kind of players who I'd suggest when they were growing up wanted to play for Manchester United, and Manchester United alone," he noted.
"I think that's very important. Even in my coaching, every team I've been at, I've gone towards players who have a real ambition to play for the team I coach. They don't just want to be professional footballers, or be successful, they want to be successful at my club. I think Sir Alex has had that all the way through."