"I think I only tweaked the muscle but you have to be 100 per cent fit to play in these games. The work that's been done on my leg has been quite intense - I think it'll be okay."
The England captain went straight from the press conference to join the rest of the squad for a training session at the City Stadium in Skopje.
Although it was the first time he had kicked a ball since getting the injury, the Real Madrid star looked relaxed and was laughing with his team-mates as he trained.
Beckham's reaction to treatment is being closely monitored by England's medical staff as the pressure is building to ensure he is ready for the vital Euro 2004 qualifier.
But should he play and then break down, the Football Association run the risk of a huge row with Real Madrid who will be furious if Eriksson takes unnecessary chances with their player.
With Scholes and Gerrard already ruled out through injury, Eriksson hopes Beckham will play a crucial role in the England midfield.
