Manchester City boss Pep Guardiola feels hunger is key in their push for back-to-back Champions League titles.

City face Real Madrid in the first-leg of their quarterfinal in Madrid on Tuesday night.

Guardiola said: "First I would say as a club there was a sense of relief.

“We made a lot of good things but always in the press conferences it was 'you arrived seven years ago but you didn't win the Champions League, you have to win the Champions League otherwise you would not complete [the job]'.

“Always I tried to reject it because this competition is so difficult.

“I would say we are a little bit more than one decade flying in Europe. Before we did not fly in Europe.

“Now we are a club who face this type of competition with the best teams of the world. But it is no more than one decade and a decade is not enough.

“Even now, to compete again, is experience for the future of our club.

“People say 'once we have won it, it's done' No. Absolutely not.

“It's not like elite clubs like Real Madrid, Bayern Munich, Barcelona, Inter Milan, for example, the big, big clubs who for 40, 50, 60, 70 years play in this competition.

“We are, in terms of history, new.

“But we have a sense of 'okay, we did it'. And of course if we did it once, we can do it again."