The South Korean will team up with United's new £17million playmaker when the Reds squad report back for pre-season training this month.
"The most difficult thing is being away from my family and friends," said Park. "Other European players can pop home because the flight is only two or three hours long.
"It's a long way to my country, which doesn't help my friends, especially when they can usually only take two weeks off from work.
"Also, because I play at weekends, and often in the week, I only get two days off here and there, which isn't enough time for me to go back to Korea.
"I'm used to it, but it's hard.
"I found from the first time I met the players and members of staff, they were very warm towards me.
"They helped me a lot, so it made it easy to join in and get used to the lifestyle. People were quick to recommend good Chinese and Korean restaurants.
"Now I like to try to help new players because I know how much it meant to me to have people help me settle when I came here."