Manchester City goalkeeper Joe Hart feels the time for learning is over and the team must start delivering in the Champions League.
Roberto Mancini's men failed to progress beyond the group stage last year and - in common with 12 months ago - have taken just a point from their opening two games this term.
Hart said: "I don't know if it is a learning curve - we are in with the big boys now, there is no place to hide. There is no point learning if you are not going to win. We need one big game against Ajax next."
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