Seamer Atkinson Adds to the English team's Fitness Concerns.
'Significant concern' for England after Atkinson leaves the field due to a hamstring issue.
The English seamer added to the injury concerns plaguing England after leaving the field on the second morning of the fourth Ashes Test versus the Australians.
The pace bowler felt a problem in his left hamstring after the final ball of the fourth over at the MCG.
The touring camp indicated the 27-year-old had experienced "tightness" and required time away from the action for further assessment "in the coming hours".
The series decider of the tour beginning on 4 January gets underway at the end of the week.
The English side has been without fast bowlers Mark Wood due to knee trouble and Jofra Archer with an abdominal strain during this series.
Matthew Fisher was brought into the squad as injury reinforcement.
His form was underwhelming during the first two matches, managing only three wickets.
He was dropped for the Adelaide match, before being recalled for the fourth Test in the playing XI.
The county bowler performed better in the fourth Test, claiming a couple of wickets in Australia's first innings, and scoring 28 runs while batting among just a trio of English batsmen to get into double digits.
Following a brief spell in Australia's second innings, he returned on Saturday morning and dismissed the nightwatchman taken by the wicketkeeper.
Unfortunately, at the end of that over, he bowled a change of pace to Travis Head and immediately felt his left hamstring.
Gus Atkinson returned to the side for the Boxing Day Test having missed the previous Test.
