Sir Alex Ferguson hailed Park Ji-sung for his matchwinning efforts as Manchester United beat Arsenal at Old Trafford - then revealed the South Korean is set to miss seven games due to international commitments.
Park's excellent first-half header proved to be the difference as United marched two points clear at the top of the Barclays Premier League, with a game in hand.
It should have been more than 1-0 too as Wayne Rooney missed a penalty 17 minutes from time.
Indeed, Ferguson's only disappointment was that he must soon say goodbye as he competes for his country at the Asia Cup in Qatar.
"Ji is in fantastic form," said Ferguson.
"Unfortunately we are going to lose him for seven matches after December 26. It is disappointing."