Scotland giants Glasgow Celtic have a mountain to climb if they are to progress to the quarter-finals of the UEFA Champions League following their 0-3 loss to Juventus .

Nigeria international Efe Ambrose surprisingly made the line up despite arriving the United Kingdom on Tuesday morning. And it was his error that led to the first goal conceded by Celtic.

Speaking to Italian media, Celtic manager Neil Lennon has admitted that he fielded the Super Eagle because he did not have a suitable replacement.

''Ambrose was an obvious choice. I did not have many alternatives. Undoubtedly, he made a mistake on the first goal,'' Lennon told Mediaset Premium .

Celtic will now need to score at least four goals on March 6 when the reverse tie is played to have a chance of making the last eight of the competition.