South Korean midfielder Park Ji- sung, who is now contracted with the British football club Manchester United, will receive an operation on his knee in the United States, local media reported on Saturday.

Park has traveled to the United States to visit world renowned knee specialist Dr Richard Steadman, whose past patients include Ruud van Nistelrooy and Michael Owen, local reports quoted officials of the Manchester United as saying.

Park's club is not sure yet how long it will take for Park to fully recover from the injury.

Park has not played since he scored and injured his right knee in a Premier League match against Blackburn Rovers at Old Trafford on March 31.

Park made great contribution when South Korean national team reached the semifinals of the 2002 World Cup.

Source: Xinhua