One shade of ‘Red’ dominated the football world in the '70s and '80s, the other followed suit in the '90s and 2000s. They may no longer be at the pinnacle of the football world but when these two giants of English football face each other, everything else in football becomes insignificant.It doesn’t matter where these teams are in the league table because when Liverpool and Manchester United face each other, it will always be special. There is too much history between these sides for this fixture to ever lose its appeal.On 10 March, when United host their arch-rivals, the battle may decide who finishes second at the end of the season but, nevertheless, the bragging rights are what matters the most.The recent fixtures between the two teams haven’t got the fans excited like it should, but that could change this time around and here are five reasons why.#1 Salah vs De Gea: Unstoppable force vs immovable objectDe Gea and Salah are probably the most important players for either teamDavid De Gea is arguably the best goalkeeper in the world, let alone the Premier League. If you disagree, you should just see his out-of-the-world performance against Arsenal at the Emirates this season.The Spaniard has a terrific history against Liverpool. In fact, some of his best saves are against Liverpool and it would be foolish to think that he'll have an off day this time around.It will take a monumental effort to get past De Gea in goal and, if anyone can, then Mohamed Salah can.26 - No player within the big five European leagues has scored in more competitive club games than Mohamed Salah (26 games) in 2017-18. Phenomenon. pic.twitter.com/P6JQ25jtQU— OptaJoe (@OptaJoe) March 3, 2018In the Egyptian, Liverpool have arguably the best player in the league this season and he has been banging in goals irrespective of who the opposition is.Salah will carve out chances, that’s a given, and De Gea will make some outstanding saves, that’s also a given. It will be a battle of epic proportions to see who wins - the unstoppable force or the immovable object.