Sven-Goran Eriksson has said Wayne Rooney is "injury free" after the striker's scan on Wednesday.
Rooney flew back to the UK for the scan, which confirmed his broken metatarsal has healed enough for him to play a part in the tournament.
Eriksson said at a press conference that the final decision on when Rooney will play again is "Rooney's and mine".
David Beckham also spoke, and said Rooney looked just as fit as the rest of the squad despite his injury.
Wayne Rooney put in a big tackle on John Terry without getting hurt
Rooney trained with the other players on Thursday morning, and even though he was only doing light work, he still managed to put in a big tackle on defender John Terry.
On Wednesday night a statement from Rooney's club Manchester United said he had a "good chance" of being able to take part in the tournament.
But it also said that the player will only be ready after the three group matches, and even then only after close checks on his recovery.
That would give him another two weeks to get fit for the second round of the World Cup - providing England qualify from the group stage.