Celtic are bidding to claim a place in Friday's draw for the last 16 of the Europa League when they face Zenit St Petersburg.
Brendan Rodgers' side have a 1-0 lead going into the second leg in Russia thanks to a Callum McGregor goal in Glasgow last week.
Ahead of Thursday’s tie, live on BT Sport at 6.00pm, the Celtic boss said: "It would be a huge achievement for us but I think we showed in the first leg how well we can play.
“We played a perfect game really. We would have liked one or two more goals but the concentration and our quality in our game was at a very high level. We know that over the course of the two legs we need to replicate that but the players are ready for that."