Manchester United boss Sir Alex Ferguson has told Sepp Blatter to concentrate on more important issues than Wayne Rooney's behaviour.
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The Fifa president told BBC Five Live that Ferguson and England manager Sven-Goran Eriksson should get tough on the 19-year-old striker.
But Ferguson responded: "Fifa is quite happy to take up smaller issues, like a 19-year-old Manchester United player.
"It should pursue the really important issues in the game."
Blatter's comments came after Rooney had an on-field argument with England captain David Beckham during the game against Northern Ireland.
The teenager was then sent off for sarcastically applauding the referee in a Champions League match against Villarreal.
"When you play at the level he plays he should be called to order," Blatter told Five Live.
"His managers should be tough on him. He could go on for 15 years but discipline and respect is essential."