Liverpool vs Manchester is considered the biggest rivalry in Premier League history - and for good reason.
With 38 league titles between them, the two most successful clubs in England just love to hate each other.
They may not have gone toe-to-toe in terms of a title race too often, but there is certainly a hatred between the two clubs.
Jose Mourinho’s United side will travel to Anfield on Sunday looking to close the current 16-point gap in the Premier League table.
And while the clash hardly needs hyping up, Mourinho attempted to do just that with his comments on Friday.
MOURINHO'S TROPHY JIBE
When asked about Liverpool’s six-year drought without a trophy - meaning Klopp is yet to lead his side to any silverware - Mourinho didn’t need a second invitation to rub their faces in it.
“I think trophies matter, it matters, especially when you have the potential to fight for trophies and especially when you clearly say the objective is to win the trophy," Mourinho told reporters.
“But when you have the potential, you have nothing to hide, you know from day one that your potential and your desire has a relation with the potential, because to say we want to win everyone can say that, another thing is to say in a conscious way in relation to the potential you have.
“But, I don't read much, I think Jurgen told already they want to win the Premier League, is their objective, is to win the Premier League.”
KLOPP RESPONDS TO MOURINHO
A few hours later, Klopp was asked about Mourinho’s barbed comments.
And while the German acknowledged the importance of trophies, he also highlighted how special his side’s run to the Champions League final last season was.
“Do I have to? Do I have to win it?” Klopp said.
“People might remember that but what I have to do is make the best of the things the club is offering me – that is what I believe in.
“If people say the Champions League campaign last season was not a success because we didn’t win the final then I cannot change that. Was it the successful finish? No, but the ride was brilliant.
“I enjoyed it a lot. Going to the final was fantastic but in life – in all departments of life including your job – if only the best counts and effort doesn’t count then life is s***.
“You can do whatever you want but if I’m not as smart as Einstein or whatever, I can’t try a little bit? I will never be him.
“I love the challenge. Make the best of it. That is how I understand life, I learned it a little bit in football. In the end other people have to judge that.”
Well said, Jurgen.
Klopp and his Liverpool side will be hoping Merseyside rivals Everton could do them a huge favour by taking points from Manchester City at Saturday lunchtime.
But in truth, the only thing that matters to Liverpool fans this weekend is a victory against their fierce rivals to put them 19 points clear of them.