ROME: AC Milan forward Ronaldinho said his team will need to concentrate for 90 minutes against Inter Milan on Sunday to avoid a repeat of the 4-0 thrashing they suffered earlier this season.

Milan looked destined for a long hard season when they crumbled at home to the champions. That defeat put such a dent in the team's confidence that they managed only three wins in their first nine matches in all competitions. But since then Milan have rebounded in spectacular fashion leading to one of the most eagerly anticipated Milan derbies in recent years, seen as a genuine title clash.