Many say the Serb is the world's No1.
But he told manutd.com: "There are a few of them doing well. I would say Thiago Silva from Milan. He's still young and has the potential to grow. He had a good season last year and if you look in England this year at the defenders, all the teams have had a few problems at the back with injuries. Vincent Kompany's had a good year but he has had a few injuries."