Real Madrid vs. Manchester United is the tie that headlines all UEFA Champions League round of 16 ties, and anyone who's not a Borussia Dortmund or Shakhtar Donetsk fan will likely be tuning into this one.
There are so many questions surrounding the tie as we approach kickoff, and here are four things to watch out for as the game takes place.
Is Cristiano Ronaldo the only attacking delight? What formation will Sir Alex Ferguson use? This, and more, inside.