"I think it's been a difficult (season) for Man United but in big games like this, we know that they're going to turn up, because everyone loves these kind of matches," Coquelin told the club's website .
"It would be a massive win for them to beat us. But we're going to be ready."
Arsenal are third in the table, two points behind Leicester, who they beat 2-1 in their last Premier League outing.
News that makes sense
Your trusted source for staying up-to-date with the world around you. Get free daily news updates and analysis, straight to your inbox.
Coquelin felt victory at Old Trafford, where Arsenal have not won in the league since 2006, would send out a message to their title rivals.
"We beat Leicester and I think the whole team is conscious that, if we want to win the title, we have to win against these kind of teams," said the Frenchman.
"Man United are always going to be a great team. Even if they had a bad spell, they still have a strong squad."
(Reporting by Shravanth Vijayakumar in Bengaluru. Editing by Patrick Johnston)
