Rooney will undergo a vital scan on Thursday

The 20-year-old Manchester United striker will have a scan on the injury on Thursday to check its progress.

However, Dr Leif Sward told The Sun: "Everything points to a perfect recovery. I have the highest hopes for Rooney and the World Cup.

"I hope I can give a perfect answer after the next MRI scan on Thursday."

News conference: England manager Sven-Goran Eriksson

Rooney's World Cup place was put in doubt when he suffered the broken bone playing for United at Chelsea on 29 April - and initial reports said he would be out for at least six weeks.

I hope everything has healed well - everything points in that direction Dr Leif Sward

Since then, he has spent time in an oxygen chamber to encourage the bone to heal more quickly and has been named in England boss Sven-Goran Eriksson's 23-man World Cup squad.

He has not kicked a ball since suffering the injury and Sward said this would remain the rule until it was entirely safe for the forward to do so.

"He is not allowed to do that or anything else that could make his foot worse before Thursday's examination," he said.

"But he can put pressure on his foot now with the special protection he is wearing.

"I hope everything has healed well and I can say everything points in that direction.

"This healing process has been very, very good."

Meanwhile, Sir Bobby Charlton said playing Rooney at the World Cup could be "disastrous" for Manchester United.

The 68-year-old, who is a director at Old Trafford, says the club will not rush the England striker back.

"It would appear his treatment has gone well and it could well be he could play some part in the World Cup," he said.

"But to make a mistake and play him before he's fit would be absolutely disastrous. More disastrous for United, than for England."