Admittedly, the World, European and Bundesliga champions remain odds-on favourites to progress to the semi-finals on Wednesday night, but there are plenty of reasons for United fans to be optimistic against Bayern Munich.
1 - First-leg scoreline gives United the edge
Bastian Schweinsteiger's away goal at Old Trafford was a blow for United, with some suggesting a goalless stalemate would have been better than a 1-1 draw. However, statistics show that over the last five years in the Champions League knock-out stages teams that have drawn 1-1 at home in the first leg progress to the next round 53% of the time.
United were on the wrong end of such a result last season as they were eliminated by Real Madrid following a 1-1 draw at the Bernabeu. But famously in 1999 the Reds profited from that scoreline against Juventus in the semi-finals, winning in Turin en route to lifting the trophy in Barcelona.
2 - Balanced United
During the first leg David Moyes' side looked well drilled and organised throughout. It was hardly a Champagne performance but, on the back of the stale ale displays against Liverpool and Manchester City, it was a rare showing of unity this season.