Celtic manager Ronny Deila has insisted that his side can still qualify for the Champions League, despite needing to overhaul a significant deficit in the second leg against Legia Warsaw tomorrow night.

The Bhoys' hopes of reaching the group stages of Europe's premier club competition were left hanging by a thread in Poland last week as Legia ran out 4-1 winners, while also missing two penalties.

However, Deila believes that his players are capable of pulling off the unlikely comeback, and revealed that it would rank among his greatest achievements should they do so.

"It is the same in every club. If you lose it is a disaster but it's a bigger disaster here. We have everything to win. I haven't given up. It's possible. If we turn this around it will be a massive night and maybe the best night of my life," he told reporters.

"It would be behind having kids, an unbelievable night. That is what we are wanting, dreaming of but behind that it needs a good performance. Thursday was a hard day but I have had many days like that in my career. That gets you reflecting and you have to use your experience to turn it around and bounce back.

"I can't go off and think of disaster, I have to think of how what we are going to do and how we will improve. The boys have been working well this week, we have been talking a lot and now we are looking forward to the game. There is always something positive with a negative for me. I have been thinking a lot and it is important that we get a lot of energy into the game because that was the most disappointing thing last week. At the end of the game were passive and lacking confidence."

Celtic will be without the suspended Efe Ambrose for the match, which will take place at Murrayfield rather than Celtic Park.