Petros Giannakouris/Associated Press
Greek side Olympiakos might be taking on one of the Champions League's most prestigious clubs in Manchester United, but they may consider themselves fortunate to be playing the English champions while they're at their lowest ebb in many years.
David Moyes' team are still heavy favorites to progress to the next round, but if Olympiakos can put them under pressure throughout the two-legged tie, there is always a chance that United's apparent lack of confidence at present could come into play.
The Greek reigning champs have opened up a massive 20-point lead at the top of the Super League, and despite losing star striker Konstantinos Mitroglou to Fulham in the January transfer window, they still boast potential match-winners such as Javier Saviola and Joel Campbell.
Manchester United, meanwhile, sit a lowly seventh in the Premier League, where they have lost eight times already this season. Meanwhile, their manager is inexperienced at guiding a team in this competition.
Make no mistake, the English team should come through this clash and continue their European run, especially considering their promising form during the group stage.
But the Greeks will consider themselves a chance of causing a major upset.