The next medical check-up on Wayne Rooney's broken foot has been brought forward by a week.
England's star striker will now have a scan of his injured metatarsal bone on 7 June.
The deadline for England to change their squad is 9 June, which means they'll have time to replace Rooney should the scan provide bad news.
But manager Sven-Goran Eriksson says he hopes that Rooney will still play some part in the World Cup.
Rooney suffered the injury in United's 3-0 defeat by Chelsea on 29 April.
29 April: Breaks foot in two places against Chelsea
25 May: Has two scans on his injured foot
28 May: Links up with England squad in Manchester
7 June: Another scan on his injured foot
9 June: Could be replaced in squad OR ...
24/25 June: Potential last 16 tie at World Cup?
Rooney, 20, had been due to fly to Germany with the rest of the England World Cup squad on 5 June, returning a week-and-a-half later for the scan.
Eriksson said on Monday: "Rooney is a very special football player, one of the best in the world, but we sometimes forget we have another 22 players in the squad. There is too much talk about Rooney's foot."
His team mate Rio Ferdinand said England could cope without Rooney on the pitch.
"Obviously if he's not fit it'll be a big blow, but there's players who can come in here and are more than capable of putting on a good show for the country," he said.