Rio Ferdinand and Ruud van Nistelrooy had a furious bust-up as Manchester United lost to Kashima Antlers in the latest match of their Far Eastern tour.
Ferdinand and Van Nistelrooy argued after the final whistle
Van Nistelrooy berated Ferdinand for dwelling on the ball during the 2-1 defeat and the players exchanged angry words on the final whistle.
Ferdinand was also booed by fans for his failure to agree a new deal.
The England defender's current contract still has two years left but he has so far refused to sign an extended deal.
Boss Sir Alex Ferguson has urged Ferdinand to pledge his future to the Old Trafford club but, despite saying he will stay, Ferdinand is in no rush to put pen to paper.
The former West Ham and Leeds man has already been heckled by United supporters during pre-season games against Peterborough and Clyde.
Ferguson fears if the abuse continues Ferdinand is less likely to stay.
And Ferdinand and Van Nistelrooy's on-field altercation did little to lift United's spirits on a frustrating night.
Dutch striker Van Nistelrooy has yet to score on tour in the Far East and his frustration came to a head when Ferdinand lost possession after dwelling on the ball.
Van Nistelrooy, on the edge of the Antlers penalty area, had wanted a quick pass and made his anger known.
The two players then engaged in a heated exchange after the final whistle.
After keeping four clean sheets on the tour to date, it took Antlers only five minutes to breach United's defence.
Masashi Motoyama controlled a cross-field pass with his first touch and with his second lashed a superb volley over keeer Tim Howard into the far corner.
United's response was immediate, with Louis Saha threading a pass to Ronaldo who darted into the area before rolling the ball across the face of goal for Ryan Giggs to tap in.
A minor earth tremor midway through the first half was hardly noticed by the players as the action swung from end to end.
United fell behind again before half-time to another spectacular goal from Motoyama.
Mitsuo Ogassawara's canny flicked pass gave Motoyama the space to fire in a powerful angled volley from eight yards.
Ronaldo spurned a second-half chance to level for United when Kleberson dropped a cross onto his head eight yards out but he failed to hit the target.
Howard had the busiest night of any United keeper on the tour and he produced two sharp saves to deny Motoyama his hat-trick.
Despite the second-half introduction of Wayne Rooney, Alan Smith and Ruud van Nistelrooy United failed to find a cutting edge in front of goal.
United finished strongly and Ji-Sung Park was guilty of an horrendous miss when he blazed over from eight yards out after being set up by van Nistelrooy's clever backheel.
Manchester United manager Sir Alex Ferguson:
"After the first few minutes we dominated the game and had an awful lot of chances. In the main I was happy with the quality.
"We created a lot of chances and the movement was good, especially in the second half.
"But hopefully we are not going to miss as many as that in the Champions League.
"Overall we have done all right. The important thing is to get back and prepare for the European games."