Rob Green has withdrawn from the England squad for their Euro 2012 qualifiers against Bulgaria and Wales because of a finger injury and been replaced by Frank Fielding.
Derby's Fielding was the first-choice keeper for England at the recent European Under-21 Championships.
The 23-year-old has conceded only three goals in five league games this season.
Ipswich keeper David Stockdale, who let in seven at Peterborough last week, is understudy to first-choice Joe Hart.
That means Fielding becomes the second Championship keeper in the squad.
Hart is the only has established keeper in Capello's squad following the international retirement of West Brom's Ben Foster.
Green lost his place as Capello's first-choice keeper during last summer's World Cup following a mistake against the United States.
It is thought Green picked up the knock during West Ham's 4-1 win over Nottingham Forest on Sunday.
Green reported for duty at England's training base at the Grove in Watford on Monday night but has now returned to his club for treatment.