Manchester City forward Sergio Aguero is likely to be out for two weeks after suffering a hamstring injury in the Champions' 3-0 win against Stoke City on Tuesday.
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Aguero was compelled to come off moments after scoring a penalty in the 74th minute to put Roberto Mancini's side three goals up.
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City won't know how long the Argentinian footballer will stay out of football until Thursday, but assistant manager David Platt has already ruled Aguero out of the FA Cup third round tie against Wattford on Sunday.
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Aguero, who was city's top scorer last season and netted the goal that won them the Premier League title, is also doubtful for the crucial league clash at Arsenal on January 13.
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'' It is difficult to assess an injury like that, how long it is going to be '', Platt said.