Football: Maradona and Messi cannot be compared - Koeman

Barcelona manager Ronald Koeman insists it's unfair to compare Maradona and Messi. Koeman: "Diego Maradona was the best of his generation. Currently, Messi is the best one [of this generation]. We cannot compare football many years ago with the current day. Today, football is more physical, higher pace and intensity. It has changed a lot. But [Maradona] was the best of his generation. He proved it everywhere he went."