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Can they keep Parkhead rocking?
Who can forget that epic night when Celtic, against all odds, defeated Lionel Messi's Barcelona. It should not come as that much of a surprise considering Celtic's impressive home record. When Parkhead is rocking it sounds like a rock concert on a football pitch.
However if there is one team who knows and can probably handle a raucous crowd it is Borussia Dortmund. The Dortmund fans are probably some of the most passionate fans around in Europe, with their fans following their team where ever they go.
Not only do Dortmund have some of the best fans in Europe they also have one of the best teams in Europe as well. After finishing first in the dreaded group of death beating both Madrid and Manchester City along the way, Borussia Dortmund have now been installed as second favourites behind Barcelona to win the Champions League.
One thing I will say is that it is easy to win games when you are the underdogs but its another thing to win when you are favourites. That is something that Manchester City could not handle for the past two years in this competition.
If Dortmund starts to suddenly feel the pressure and fail to perform to the best of their ability, then another shock upset could be on the cards in Parkhead which could set up an interesting return clash back in Germany.