Manchester City must attack United at Old Trafford - Nedum Onuoha

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"It's the first time in a long time there's been so much pressure on United to beat us. But if you start thinking of defending at Old Trafford, it usually leads to bad things happening.

"We have to attack. If we score the first goal then it puts a lot more pressure on them. And if the game gets stretched later on, there are players on our side who will relish it.

"I was at the play-off final when we beat Gillingham but I've never actually played at Wembley, never come close. But we need to make sure we get through that semi-final hurdle."

Onuoha also feels that the Citizens are benefiting from a change in mentality introduced by new manager Roberto Mancini, especially in defence.

"You could see the way that the mentality changed in a short time, and there was even greater expectancy," the 23-year-old said.

"It was good to be able to watch things develop and know the level you needed to be at if you want to be in the side. It's a challenge, but if it's too easy you probably lower your standards."

The former England Under-21 international appeared at right-back in the FA Cup against Scunthorpe United at the weekend and marked his performance with a goal in the 4-2 win at Glandford Park.

A deft ball from Stephen Ireland created the chance for the goal, with Onuoha netting an admittedly rare goal.

"I've played alongside Stevie for years, so I knew when to expect the ball. I usually score once a season, so I guess that's probably it!" he quipped.

"Perhaps in the past we'd have faced an upset. I was on the bench at Oldham Athletic and it hit me quite hard, but even though Scunthorpe are a good side I was never really worried, even at 1-1."