Manchester City manager Roberto Mancini has said he is concerned about whether Jack Rodwell will be able to shake off injury problems and realise his potential.

Rodwell joined City from Everton in a £12 million deal last summer, but has made just two starts because of a persistent hamstring problem.
It is an injury that is causing real concern for City - so much so that Mancini has said he fears Rodwell could struggle to hit the heights expected of him.
"I'm worried because when we bought him we thought he was a good player and then he has these problems with his hamstrings," Mancini is quoted as saying in the Times.
Mancini said the City medical staff were doing everything in their power to find a solution, adding that he hoped Rodwell could be back in action before the end of the month.
"We hope we can improve the situation for him because he's young, he's got quality, he has everything to have a good career," the manager added.
"He's getting better, and we hope maybe we can recover him in two or three weeks."
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