Barcelona playmaker Andres Iniesta has insisted that his side still have work to do before they secure their place in the quarter-final of the Champions League.

The Catalans are big favourites to advance following their 2-1 victory against Manchester City at the Etihad Stadium last night.

However, ahead of the return meeting in Catalonia, Iniesta has revealed that nobody inside the Barca dressing room believes that the job has been completed.

"The feeling among the squad is that it was a good performance, but not a definitive one," he told the club's official website.

"The return match will be an open one. When a team has nothing to lose then they are more dangerous and we are going to have to be careful at the Camp Nou. We'll need to be as ambitious as we were here."

The scoreline would have been even more convincing in Barca's favour had Lionel Messi not failed to convert a stoppage-time penalty.