Manchester United face Rio Ferdinand's old club West Ham United this weekend.
Ferdinand admits he's completely changed his approach to the game from his days at Upton Park.
"When I was a young lad at West Ham, I was more concerned about what piece of skill I'd pulled off against a forward, rather than keeping a clean sheet," Ferdinand told Inside United. "Not that there were all that many at West Ham in those days, mind you!
"But these days, when you've come off the pitch with a clean sheet it's a tremendous feeling. As long as you get a clean sheet, you're happy. It's a mentality I've grown into over the years."
