The South Korean midfielder moves to Loftus Road on a two-year deal after seeing first-team opportunities at Old Trafford dwindle.
Mark Hughes is delighted to have signed the energetic midfielder, and feels it is an important deal for the club.
“This is a real coup for QPR,” he told the club’s official website.
“We are delighted Ji is going to join us because his record speaks for itself.
“He has been a big player for Manchester United and played a big part in their success in recent years.
“He is hugely respected there because of what he has achieved, his application to his work and the impact he has on games.
“He was always picked for the big matches because they could rely on him, and we are going to reap all those qualities.
“I think it is fair to say Ji has been attracted not to where QPR are, but where QPR are going.
“We were able to show him where the club is heading and he embraced it. Ji gets what we are trying to do. This is a huge signing for this football club,” he admitted.
Park has also stated that he is looing forward to a new challenge and is excited about Rangers’ Premier League project.
“The project was simply too good to resist and I am excited about getting started in pre-season and going on tour to Asia in the coming days,” the player confessed.
“I am joining a club that is very much on an upward curve – a club that has a very bright future.”
By Gareth McKnight