Following a £12 million summer switch from Everton, the 22-year-old has managed just eight Premier League appearances after a number of injury setbacks - prompting Roberto Mancini to admit to concern over the recurrences.
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“I felt a jabbing pain just before I took a shot at Villa Park and I knew straight away I had a problem,” he told the club's official website.
“I decided to shoot anyway and stayed on for the corner to see if I could maybe nick us a goal, but it was pointless carrying on after that.
“This is an injury that can strike at any time to anyone and I’m sure it something that I’ll be rid of before too long, but it’s an on-going process and something that can’t be rushed.
“Obviously you don’t want to tempt fate but I’m not looking at this a lengthy absence and I hope to be back in a couple of weeks."