Park Ji-sung admits he has mixed feelings about his impending departure to compete in the Asian Cup. In the aftermath of last night's 1-0 victory over Arsenal, Sir Alex Ferguson revealed the popular South Korean will miss seven matches once he flies back home after the Boxing Day clash with Sunderland. Should the Koreans be knocked out early during the three-week tournament in Qatar, Park will be back sooner. But as they are one of the favourites to lift the trophy, that seems unlikely. And having been one of United's most impressive performers recently, Park accepts that, for once, he will head home with a heavy heart. "I have mixed feelings about the Asian Cup," he said. "At the moment I am playing with confidence, so I do feel a bit strange about going. "But I am always happy to join my national team as well. "Even without me Manchester United have enough players to keep winning, so I will concentrate on the national team and then focus on Manchester United." Park certainly enjoys his tussles with Arsenal. His fine first-half header last night was the fourth time he has scored against the Gunners, which is a quite remarkable record in itself given the 29-year-old's overall tally since he moved from PSV Eindhoven in 2005 is just 22. The latest effort was amongst the most spectacular as he had to act fast to change his body position as Nani's right-wing cross bounced down off Gael Clichy. "It was a strange goal," he said. "The ball changed direction so I had to move suddenly. "I thought it was going to hit the post. But finally it went in and I was able to celebrate. It was a good goal for me and the team." It put United in pole position, two points clear of Arsenal and Manchester City, with a game in hand. Should Sir Alex Ferguson's side follow up their triumph by winning at Stamford Bridge on Sunday to extend their unbeaten start to 17 matches, they will really start to believe a record 19th league title is going to be theirs in May. "At the moment we are in a great position," said Park. "But there is still a long way to go in the league. "We always seem to play very well in the winter so we just have to try and keep our performances up."