Mancini wants Galatasaray to be patient against Juventus
The two teams will meet in Istanbul on Tuesday, with the home side needing three points to qualify. Juventus will require just a draw.
"The objective is to remain compact," the Italian said on Monday. "A goal could arrive at any time over the course of 90 minutes.
"We're hopeful of the outcome, we'll be focused on the win in the hope that all will go well for us out there.
"Our primary goal is not conceding. If we do not allow our rivals to find chances, I think we will win this game.
"Our target is definitely qualifying for the next round. We are not thinking of another possibility such as finishing the group in third place."
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