LONDON - Former Manchester United captain Roy Keane has lashed out again at retired Old Trafford manager Alex Ferguson.
The fiery Irishman claims in a documentary set to be aired on Tuesday that the Scottish coach is trying to exert "control and power" at the struggling defending champions and has a "massive ego".
Keane, who was the midfield driving force in a glorious spell for the club between 1993 and 2005, but who has fallen out with Ferguson since then, said his former boss at Nottingham Forest, Brian Clough, was the best manager he worked under.
United have endured a difficult start to life under Ferguson's successor David Moyes, having already lost three league games at Old Trafford, leaving them in ninth spot and 13 points behind front-runners Arsenal.
Keane said of Ferguson, now a director at United: "Everything is about control and power. He's still striving for it now even though he's not manager. There's massive ego involved in that."
Keane, who left United in 2005 after a disagreement with Ferguson, was speaking in an ITV4 documentary called 'Keane and Vieira: The Best of Enemies' concerning his rivalry with former Arsenal captain Patrick Vieira.
He said that his relationship with the former United boss is now "non existent".
The Irishman even took issue with Ferguson praising him in his recently released autobiography for "covering every blade of grass" in the 1999 Champions League semi-final second leg against Juventus.
"I get offended when people give quotes like that about me. It's like praising the postman for delivering letters," Keane added.