He revealed the break may have done him good.
"I've missed a month-and-a-half of competition - but it's allowed me to recharge my batteries," he said.
"With City, we're still in four competitions with the aim of winning them. In the Champions League, we are going to have an exciting game against Barca. For me, they are more beatable than in the past.
"Personally, I think we can knock them out. If our injured players are back, with a full team, I think we can beat them."
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