The 28-year-old captain didn’t participate in England’s practice game on Tuesday in order to have treatment on a sore back.
However, Ian Bell played down the seriousness of Cook’s injury complaint and blamed the problem on a long flight from England to Australia.
“I’m sure he’ll be fine. Obviously a long flight isn’t always easy,” Bell is quoted as saying by BBC Sport.
“He’ll be right in the next week or so.”
Meanwhile, Bell talked up Boyd Rankin’s qualities ahead of the giant seamer’s Ashes debut this winter.
“Physically he’s quite an intimidating guy, he’s a big unit, he’s strong, he’s fit and he can bowl good pace,” added Bell.
“He’s a real good competitor and if he gets the opportunity I’m sure he’ll be raring to go. If we do have any pace in the Test wickets I’m sure he’ll be able to get the most out of that.”
England face Australia in the opening Test in Brisbane on 21 November.
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