Sir Alex Ferguson has warned Wayne Rooney not to jeopardise his World Cup dream by pushing himself too hard.
The Manchester United boss has agreed to let Rooney travel with the England squad to Germany on June 5 even though he will not know whether he will play any part in the tournament until the results of a second scan on his broken foot on June 14 are known.
Ferguson is acutely aware how desperate the 20-year-old is to appear in his first World Cup but told MUTV: "We do not just look at this from the medical point of view. Wayne has to take care of himself too. He has to look after himself by ensuring he is getting the proper rest and is wearing his orthopaedic boot at the right time, particularly in training."