Manchester City goalkeeper Joe Hart admits Manchester United have simply been too strong this season. Hart admitted that he did not know why City's form had fallen away so badly but admitted they come up against a 'killing machine' in leaders Manchester United.
"We have done well, but we have been up against a killing machine that have kept turning out results," he said.
"Maybe we have drawn more than we would have liked to. But it has not been a perfect season and it needs to be pretty perfect to win this league."
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