Fabio Capello has confirmed that Rio Ferdinand has suffered a knee injury in training and the defender is undergoing a scan at hospital.
The centre-back, 31, hurt his left knee towards the end of Friday’s first session at their Rustenburg base.
Capello claims the problem is not too serious but admits he faces an anxious wait on the results of a scan before the picture becomes any clearer.
“The bad news is that in the last moments of the training session Rio suffered a problem with his knee,” said the England boss.
“He has gone to hospital for a scan. We will have to see how things are. He did it during a tackle.
“It was a normal tackle, but there was a slight problem. It was his left knee. We have to wait for the scan.”
Ferdinand was restricted to just 21 appearances for his club this season, starting only 13 Premier League games, in a season disrupted by a back injury.
Capello also confirmed that goalkeeper David James was forced to miss the session after picking up a slight knock.
“David James has a little problem with his knee, but it is not a big problem,” he said.
On a more positive note, Gareth Barry was able to participate in training for the first time since injuring his ankle towards the end of the domestic season.
“Barry has started to train with the team and he has improved every day,” said the Italian.
“He is getting better and better every moment and in the afternoon he will train in the gym with the physio. Every morning he will be with the team. We have to be careful because the ankle is still an issue.”