Their rivalry on the football pitch was epic. Off the field though, Manchester City's Roberto Mancini has high regards for his counterpart at Manchester United and has said that Alex Ferguson is the best manager football saw in the last 27 years.
In a report published in the Guardian, Mancini said he sent a letter to Ferguson after he announced his retirement earlier this week. "Yeah, I sent a message. I sent a letter," he said. "It is private and confidential."
Hailing Ferguson's achievements, Mancini voiced his doubts on whether football will ever find another manager who will be able to replicate the feat of the 71-year-old.