Elfsborg remain optimistic about defeating Celtic despite suffering a 1-0 defeat in the first leg of their Champions League qualifier.
Kris Commons' header in the second-half was enough for the Scottish champions to register a win at home, but their Swedish opponents believe they can overturn the deficit, says Elfsborg striker James Keene.
The 27-year-old Keene played for Portsmouth before switching to the Swedish league in 2006, and is convinced that Elfsborg have every chance of beating Celtic at home.
"Celtic Park was always going to be a tough place, but I think we showed that we are going to ask a lot of questions at home," said Keene. "It is definitely not over. We are pretty happy with 1-0.
"We played pretty well. It is going to be a different game when they come to our place.
"I think we have a great chance."
Celtic manager Neil Lennon was satisfied with his sides performance, and the resulting scoreline, and he believes the factor of a first leg clean sheet will help see them through a tricky tie.
"I know the scoreline might not look the best but the clean sheet was vital and I would have taken any kind of lead," Lennon determined.
The second leg will be played on Elfsborg's artificial pitch in Boras, and Celtic will have to defend well if they are to retain their lead over a side that has only lost once at home in it's last 25 matches.
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