The boss wants clear heads and passion, but also wants coolness and focus as the Blues look to return to winning ways.
“It’s an important football game,” said Guardiola.
“It’s important emotionally for our fans in the stadium and it’s special, but always in these types of games I would say that the less emotional you are you will be better.”
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Asked whether he felt Ruben Amorim was already having an impact at Manchester United, the boss added: “It’s already there. All the patterns they start to do it, the movement, runners, pace...
“He’s doing a good job. I’m sure of that, he will do it.”
Guardiola also says in spite of our recent results, he is comfortable knowing his players are giving their all to break the current cycle – and is certain the form will improve very quickly.
“I think in our jobs always we want to do our best and when it doesn’t happen you’re more uncomfortable,” he said.
“Not just managers, but especially the people under scrutiny for every step we do as a team.
“You think more about what can you do, I feel the past few weeks with the situation [the way it] is with the results… I’m really pleased for the way we played and have a certain authority in what I’ve done in my career so that I know when we play good or not.
“We have to shoot more, yeah, do less mistakes, yeah, but the game is there.
“The rest of the games we were there. I know the reason why, that’s why you move forward, keep working, this is what we have to do.”
Watch the manager’s press conference in the video player above.