Sir Alex Ferguson signing says he actually held a meeting with Man City before he even signed for Man United

Manchester City and Manchester United are age-old rivals and it is considered a cardinal sin for a player to play for both clubs.

Carlos Tevez’s move to the Etihad Stadium from Old Trafford in 2009 is the best example of how controversial it is considered to move from United to City or vice-versa.

Gary Neville discussed Tevez’s move to Manchester City by admitting that the transfer “annoyed” him.

Manchester United players were stunned by Tevez’s exit to Roberto Mancini’s side…