England and Chelsea skipper John Terry remains a doubt for Saturday's World Cup qualifier with Kazakhstan.

The Chelsea star has been troubled by a back problem and while he was able to play some part in training on Wednesday after missing Tuesday's session completely, he did not complete it all.

England's medical staff will continue to assess Terry's fitness but Wes Brown, Matthew Upson and Joleon Lescott could all come into contention as a replacement.

Fabio Capello also has an instant replacement as skipper, having named Rio Ferdinand as the vice-captain in August.

Terry's legendary reluctance to miss any game could still see him involved at Wembley but with little training behind him, Capello may opt to keep the defender fresh for next Wednesday's trip to Belarus.

Capello would certainly hope to have Terry involved in an intended practice match on Thursday, in which it is thought Steven Gerrard and Frank Lampard will attempt to show they can play together in central midfield.

Emile Heskey is expected to be involved after sitting out training with a back injury, which is also the problem Jermaine Jenas was nursing, although the Tottenham