United are undefeated in 14 games and Ferdinand told UEFA’s Web site that former teammate Ronaldo is the key man to stop.
“You get as many people around the ball when he’s got it as possible, but Madrid are that good a side you have to make sure you’re set up right and that your team are in good positions all over the pitch to defend,” Ferdinand said. “The fans appreciated him when he was here and since he’s been gone they sing his name. He came here a young boy and left a world-class player. He showed a lot of respect when he left and still does.”