Manchester United midfielder Bruno Fernandes says there's no secrets facing Manchester City.
Fernandes has explained what it will take for United to stop their cross-town rivals.
“We know it's always difficult to play against City; we have to do everything good, almost perfection I think," he explained.
"The idea of the football they play is easy to understand but it's difficult to play against. Everyone understands the way they play, they want to have the ball, they want to put pressure on and when they lose it they try to win it straight away.
"Everyone knows that, but it's difficult to play against and difficult to win the ball and have some possession for a long time against them. But I think we have to understand what we can do against that type of game and what we can do better to win the game.
"We all know it's difficult for us, but it will be difficult them in the same way."