Neil Lennon claims he witnessed enough in last week's 2-0 Champions League play-off defeat by Shakhter Karagandy in Astana to believe the second leg at Parkhead can be rescued.
The Hoops lost to the Kazakhstan champions to leave their group-stage aspirations in the balance.
However, the Celtic boss insists he was encouraged rather than frustrated by his side's first-leg performance.
"There are deficiencies in the way Shakhter play, we exposed them in the first game but couldn't take advantage of it," said Lennon.
"So what we have to do is take advantage of the opportunities that we create.
"I need my players to play their best and if they play their best then I think they will win this tie.
"We know we had by far and away the bulk of possession and by far and away the bulk of the best chances over there.
"That gave me a lot of encouragement rather than frustration.
"We know we can create chances against this team and hopefully at home we can take those opportunities.
"It may be a frustrating evening so we have to be patient.