There wasn't at all, Neville had replay of all angles, one is clearly both players lunging in, Rooney was slightly later to the ball, Bravo's foot was side on both getting the ball with the side of his foot and making contact with Rooney with the side of his foot. So Neville says it was studs up and late thus could have been red.
Rooney was later, jumped just as much and made a meal of the contact. He was mid air and their ankle/areas clashed but it was pretty light due to being in the air and both doing exactly the same thing.
Never a penalty or a red, terrible touch and needless to put himself in that position but he did nothing differently to Rooney except he won the ball.