Manchester United was once the most feared team in Europe, and they have been like that for most of the Sir Alex Ferguson era. Since he handed over, Manchester United have gone from grace to grass, finding it difficult to over top European clubs.
Someone would not believe that there was a time Manchester United to beat Chelsea 6-0, thrashed Arsenal 8-2. But the Last time Manchester united met Chelsea, they could only draw them at old Trafford, and also Lost to Arsenal.
There were times, Manchester United used to beat teams like Real Madrid, in 2003 Manchester united thrashed Real Madrid 4-3. Roma would never forget 2007 when they conceded seven goals against the red devils. Juventus were not left out when they lost 3-0 against Manchester united in 2003. Even AC Milan Got thrashed in 2009 when Manchester United scored four goals past them. In 1984_ Manchester united humiliated Barcelona with a 3-0 scoreline.