City are unrecognisable to the club Zabaleta signed for in 2008.
"It's completely different," he told the Mail on Sunday. "City have a big reputation now, not just in England but around the world. We have big players and obviously the targets are different, to win as many trophies as we can every season.
"We know how difficult it will be against Barcelona. The quality of their players is fantastic. Make one mistake, and you'll concede."
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