1. Wayne Rooney
Putting Rooney ahead of Ronaldo is a questionable call, but his achievements and longevity at the club gave him an edge.
The English striker joined Manchester United in 2004 for a stunning €37m from Everton and scored a hat-trick on his debut against Fenerbahce. A club-record 253 goals followed in 559 appearances.
Rooney also formed a brilliant partnership up front with Ronaldo, Carlos Tevez and Dimitar Berbatov. Together, they won several major titles before the start of the 2010 decade.
Wayne later became captain of the Red Devils and a mentor for the younger generation as he reached his thirties.
The current-Derby County star won 16 trophies for Manchester United, which included five Premier League titles and a Champions League.