The South Korea international midfielder said: "I'm confident that we can retain the Premiership title this season.
"Nani is very quick, Owen works hard and Carlos has great vision. Anderson hasn't played much, but I am looking forward to seeing more of him. Hopefully, I'll be playing again early in the New Year. My knee is getting better; it's a case of so far, so good.
On playing for United, Park added: "The facilities for young players are better in Europe than in Korea.
"Here, they play on grass, whereas back home they play on hard surfaces or artificial turf. Generally, young professionals in the Netherlands and England belong to a club which has great facilities in order for them to develop their talent. In Korea they only play for their school and are not part of a club.
"Football in Asia is improving, but it will take time to reach European standards. For me, it's important for Asian players to come to Europe's top-level teams to learn how to play. But if I could give one piece of advice for the young players in Korea, it would be: enjoy playing the game and don't give up on your goals."