Cristiano Ronaldo almost treated his first spell at Manchester United as an apprenticeship, as he put in the work to become one of football's greatest players ever.
Ronaldo first joined the Red Devils from Sporting Lisbon in August 2003 as an 18-year-old for a fee in the region of £12.2million, making him the most expensive teenager in the world at the time and was instantly handed the prestigious No.7 shirt.
There was a perception of Ronaldo when he first joined the Premier League that he was an underdeveloped youngster who was still lacking muscle mass.