Manchester City could crash out of the UCL in the group stages if they lose against Barcelona. And Guardiola understands just how important it is to get a win at the Etihad.
The reverse fixture at the Camp Nou saw the Citizens fall to a heavy 4-0 loss, a result that spells doom for their footing in the competition.
And to avoid a humiliating group-stage exit, he has called on his players to give their all on Tuesday.
“I think we know what we have to do to beat [Barcelona]. They know us but hopefully our quality up front will make a difference,” he explained in a press conference.
“We have to play in that way, like a final. It’s not a final for them, it is a final for us. It’s just three games left now. We dropped two points in Glasgow against Celtic. So we will try, we will try it again.
“I’ve never thought we could not win, I have never entered a match thinking we can’t win. We have to play almost perfectly to win but if not we congratulate them and set our minds on the game against Celtic and in Monchengladbach in a few weeks.”