Cristiano Ronaldo revealed his relationship with former Manchester United manager Alex Ferguson played the key role in convincing the Portuguese to return to Old Trafford. Ferguson retired as boss of the Red Devils in 2013, four years after Ronaldo departed for Real Madrid in a then world record £80 million move. However, he remains a club ambassador and confidant of current United boss Ole Gunnar Solskjaer, who also played under Ferguson for many years. Ronaldo looked set for a return to England with Premier League champions Manchester City last week until Ferguson and a host of his former United teammates