Manchester City chief Patrick Vieira says they're still learning the ropes in terms of the Champions League.

Vieira feels the problem lies with City lacking a history of association with the competition, something that is part of the fabric when it comes to the European heavyweights they have fallen short against.

"I think people are really demanding but Champions League is a different level," said the 36-year-old former France international midfielder.

"The Champions League, it's not just (about) players - it's about a football club and how you grow up. It is new for us. We're learning and I believe we're going to get better. But it will take time."