The day is almost upon us, football fans.
Next week, Manchester United travel to the Bernabeu for the most eagerly anticipated game of the season so far for the first leg of their Round of 16 Champions League tie.
Real Madrid's poor domestic form of late has been drastically different to that of their opponents—the Red Devils have amassed more Premier League points than at the corresponding stage of any previous campaign.
But Sir Alex Ferguson's side certainly won't be expecting an easy win. Los Blancos are as good a team as any when fully firing.
Here are 10 factors that could decide the matchup.