7) Wayne Rooney/Cristiano Ronaldo – 20
A partnership that served Manchester United very well in their hugely successful period between 2006 and 2009, Wayne Rooney and Cristiano Ronaldo combined for 20 goals for the club, with the Portuguese star particularly prolific in that time.
6) Eric Cantona/Ryan Giggs – 20
Another awesome combo in United’s history, Eric Cantona and Ryan Giggs also worked together to contribute 20 goals between them for the Red Devils.