The 30-year-old South Korean midfielder, who was the first Asian to compete in a Champions League Final in 2009, will be attempting to become the first to collect a winners medal in Saturday's showdown.
If he does it will put the crowning glory on an already glittering career which shows no signs of abating at club level, although he retired from the South Korea team after winning his 100th cap at the Asian Cup in January.
Initially booed at PSV Eindhoven he was soon being praised as the Dutch team's best player and, after a long, steady climb at United following his arrival in 2005, his remarkable contribution is now universally acknowledged.
Park is a manager's dream not only for his remarkable fitness and tenacity and the way he rarely loses the ball but in his ability to follow instructions and function efficiently in he heat of battle.
"There are some players you can normally rely on to keep a cool head and Park Ji-sung is one of them," said Sir Alex Ferguson, who described leaving Park out of the 2008 final squad as the toughest decision of his career.
A certain starter on Saturday, Park will be tasked with disrupting the rhythm of Barca's free-passing midfield as well as seeking to tie down Lionel Messi when he runs from deep.
"I don't know yet if I've been singled out for a special role in the match," said Park. "Maybe after the final I will be tired, but that's my role in the game, to run a lot.
"Messi is one of the best players in the world. One against one, you can't stop him so we have to stop him as a team."
"We are not scared of Barcelona," he said. "We will have to play to our strengths to beat them, they are one of the best teams in the world, but we have our own quality."
