'But I know the guy and I know the work he has done in football and I can't see it lasting long, I can't see it'
However he has since spoken with the former Manchester United manager
Gary Neville just the latest in a long line production line of former Ferguson players to become a manager
Neville played his entire career under Ferguson's management
Some of the world's best former players will head to Old Trafford for Unicef on Saturday
Ronaldo admits he may leave Real one day
Sir Alex Ferguson was "99 per cent" sure that Cristiano Ronaldo was going to return to Manchester United in 2013, former club captain Patrice Evra has revealed.
Rooney is just 13 goals away from Sir Bobby Charlton's all-time club record
An incredibly successful manager and shrewd businessman, yes – but as far as secrets go, it was pretty scant
View from the Sofa: Sir Alex Ferguson: Secrets of Success, BBC1
Klopp has promised to end the Reds' long wait for a league title
The pair have fueded since Keane's departure from Old Trafford in 2005
Former United manager insists his choice of successor was the right one under the circumstances
The former Manchester United manager felt they gave his side an immediate advantage
Sir Alex Ferguson recounts one of the stranger educational trips of his tenure
Ferguson named Eric Cantona, Cristiano Ronaldo, Paul Scholes and Ryan Giggs as the only four world class players he managed