Carlos Tevez reveals how a broken promise from Sir Alex Ferguson led to his infamous switch from Man United to Man City

Carlos Tevez has revealed that a broken promise from Sir Alex Ferguson was the key reason behind his controversial move from Manchester United to Manchester City in 2009. Tevez had been on loan at United before making the switch to their city rivals. He went on to win the Premier League with City and famously held a 'RIP Fergie' banner, further inflaming the rivalry.