#2 Cristiano Ronaldo
Cristiano Ronaldo will go down in Manchester United folklore as one of their most important and loved players in their history, and the journey began back in 2003, when he faced off against his future United teammates with Sporting Lisbon and mesmerised them, which forced manager Sir Alex Ferguson to put a bid for the 18-year-old for a fee of £12.24 million.
After taking a few seasons to get used to the intensity and the physical nature of the Premier League, Ronaldo found his groove and helped United to three back-to-back Premier League titles and one Champions League title before departing to Real Madrid for a world-record fee of £80 million – a profit of around £67 million for Manchester United.
#1 Ole Gunnar Solskjær
The current Manchester United boss was also brought in from obscurity, having signed for the club from Molde in Norway in 1996 for a fee of around €2.5 million.
The Norwegian was a fantastic goalscorer, most notably coming off the bench to score crucial goals for the club, while becoming a fan favourite for his great energy, work-rate as well.
His last-minute goal to win the 1999 Champions League final helped him become one of the most loved players in United history.
He ended his United career with 126 goals from 366 appearances, and then became part of the United coaching set-up, before returning to the club in 2018 as interim manager and then the permanent manager of the club.