Manchester City chief Patrick Vieira insists their Champions League campaign is still alive.

Without a win in their first four attempts, the Blues must beat Real Madrid at home and do likewise in Borussia Dortmund while hoping other matches fall in their favour.

"I believe that when the door is still open, however small it is, there is always going to be a chance," Vieira said.

"Of course we didn't help ourselves, didn't make ourselves any favours but the door is not completely closed.

"So it is going to be difficult and of course not so many people will believe that we can go through.

"But the door is not closed. It is still open and we have to believe after what happened last year and the goals we've scored in the last minute of games, that gives us hope.

"And if not, you have to play for the third place and play for (qualification to) the Europa League."