The United midfielder has credited Ferguson for developing his game to the level where he has become the focal point for his national side.
"He believed in me and has given me more confidence to play against big teams," the track-suited Park told Reuters on Sunday on the eve of South Korea's World Cup warm-up against Japan.
"Mentally and physically, I have grown up since I joined Manchester United (in 2005). Ferguson said 'enjoy the World Cup and good luck' and told me not to come back injured.
"I'm feeling fine now. I've had a few days off after the season. I'm getting better so hopefully I'll be 100 percent at the World Cup."
"Our goal is to get to the second round," said the 29-year-old. "We're not thinking about anything further ... we are just concentrating on our group.
"What happened in 2002 was a great result for us. We know it was something like a miracle.
"It could happen again but the percentage of it happening isn't high so we just concentrate on the second round and after that nobody knows what can happen in the tournament."
"Our team is very well organised - we have a good mix of young and experienced players," he said.
"Hopefully once we get through this World Cup we can compare (favourably) with the 2002 World Cup."
"It will be a good game because the atmosphere it is very different from normal games," he said. "Games against Japan have more feeling than other friendly games."
South Korea have notched 33 wins to Japan's 10 in their previous 61 meetings, their last victory coming the East Asian championship earlier this year.
"It's quite a long time since we've had this kind of match with Japan -- some players missed out," he said.
"Hopefully my experience will help, but we've played a few games against Japan and the last game was just a few months ago so everybody knows what to expect."
