Paceman Gus Atkinson Adds to the English team's Injury Concerns.
'Serious blow' for the English camp as Atkinson is forced off due to a hamstring issue.
The English seamer further complicated the fitness woes of the England squad when he left the ground during Saturday's play of the Boxing Day Test versus the Australians.
The pace bowler pulled up with his left hamstring immediately following a delivery in his spell at the MCG.
The England team indicated Atkinson had experienced "tightness" and required time off the field in order to be assessed "during the day".
The series decider of the tour beginning on 4 January begins on Sunday, 4 January.
The English side has previously lost fast bowlers Mark Wood with a knee problem and another paceman with an abdominal strain on the current trip.
Matthew Fisher was brought into the squad to provide backup.
The seamer had a tough time during the first two matches, managing only three wickets.
He was dropped of the third Test, then recalled for the Boxing Day match to fill the void.
Surrey's Atkinson performed better in the fourth Test, claiming a couple of wickets in Australia's first innings, then making 28 as a batsman among just a trio of English batsmen who passed ten runs.
After bowling one over late on the first day, he came back the next day and had nightwatchman edging to the keeper.
However, towards the conclusion of that over, he bowled a slower ball to Travis Head and suddenly grabbed at his leg.
Gus Atkinson was recalled for the Boxing Day Test having missed the Adelaide game.