Yorke, who skippered the Sky Blues to championship glory against Central Coast Mariners in the first year of the competition in 2005-2006, believes the club dubbed ‘Bling FC’ during his one-year tenure remains Australia’s pre-eminent force.
And he will be keeping one eye on the outcome of the Big Blue back in the UK, admitting his "soft spot" for Sydney still runs deep.
The former Manchester United great - who made 21 appearances for Sydney as its $1 million marquee maestro - told The World Game: "I have incredible memories of my time with the club and to set up the winning goal in the grand final for Steve Corica (now a member of Sydney’s coaching staff) was nice.
"It was an amazing time to play my part in putting the A-League on the sporting map in Australia and taking the game forward.
"To win the title was an added bonus, because it capped off an amazing season for us, and I see no reason why they boys can't do it again.
"They beat Melbourne Victory in 2010 in the grand final and I know what it would mean for the club to do it again and pick up a third A-League championship.
"For me, Sydney are the biggest club in Australia. They are the focal point of the A-League and they always have been.
"They are always knocking on the door in terms of winning the A-League and to beat Melbourne Victory would be big for the club and also for the city itself.
"There's always been that rivalry there, even in the early days of the competition, and it will be all about who controls their nerves best on the day, sticks to their game plan and takes their opportunities when they come."
Having famously won the European Cup, Premier League and FA Cup treble with United in 1999, Yorke found his way to Sydney after subsequent spells with Blackburn and Birmingham and went on to skipper Trinidad and Tobago at the 2006 FIFA World Cup in Germany when he departed Australia.
Playing in midfield, the ever-smiling Yorke still scored seven goals and adorned the social pages almost as often as the back pages a he cut a swathe through Sin City.
His crowning glory against the Mariners was also his last match for the club as the Sky Blues sought to rein in their spending in season two of the competition.
The game is still fresh in his mind as he looks back nostalgically.
"I remember threading the pass to "Bimbi" (Corica) and he did the rest ... I know what it feels like to capture an A-League title and hopefully the current Sydney players will have that same feeling on Sunday," said Yorke, now a TV pundit.
A surprise omission from the PFA’s recently named A-League Team of the Decade - where fellow former Sydney FC star Alessandro Del Piero only made the bench - Yorke believes the marquee concept must remain a part of the fabric of the competition.
"It's all about attracting the best talent and giving fans something out of the ordinary and that's where players like Del Piero come in," he added.
"There was always that element of doubt when I came to Australia (aged 33) that I would deliver that marquee fire.
"I was that glamour guy coming in and that's all well and good ... but I feel I produced also and I was grateful that I played alongside a bunch of guys how believed in what I was trying to achieve.
"I was happy to be given the opportunity to start the trend. Australia is a country with a great sporting tradition and has produced greats like Mark Viduka and Harry Kewell who made their names aboard.
"But when you have a big name foreign player join a team, whether it's Sydney FC or anybody else, it can only be good for the competition because it attracts a wider audience."
While pointing out the lure of the MLS and now Asia as big draw cards for star players nearing the ends of their careers, Yorke wouldn't hesitate to recommend the A-League also as a football destination.
"Of course Australia has a fair bit of competition on its hands but its important for the growth of the game to continue to try and attract the top layers at the back end of their careers," he added.
"In terms of what a city like Sydney, and Australia as a whole has to offer, it's a place and league I would urge any payer to embrace."