England have already been forced into one change of their 15-man squad with Tom Banton replacing Jacob Bethell but McCullum had better news on Jofra Archer, Brydon Carse, Jamie Overton and Jamie Smith.
McCullum, who revealed there is “no one specific on standby”, explained England’s mounting injuries were a major factor in them tapering off their training sessions as the India tour progressed.
McCullum hopes a change of scenery when they head to Pakistan next week might lift his ailing batters before insisting he is confident they can turn round their fortunes at the Champions Trophy.
A common theme of the India trip has been England’s struggles against spin, with Varun Chakravarthy the star of the T20 series while Ravindra Jadeja stood out in the first two ODIs.
Archer’s cut on his bowling hand and toe and hamstring niggles to fellow pacemen Carse and Overton respectively meant they missed out at the Narendra Modi Stadium, while wicketkeeper-batter Smith has been absent since midway through the T20 series owing to calf trouble.
