Manchester United legend Roy Keane has taken fresh aim at Sir Alex Ferguson over his departure.

Keane turned his ire onto Ferguson and the former United chief executive David Gill over his acrimonious dismissal in November 2005. The Glazer family had completed their takeover of United six months earlier in a £790million leveraged buyout.

"When I was at Man United, when I was negotiating new deals or the day I was leaving the club, the clubs made it pretty clear to me on every aspect of contract negotiations I had that it's a business," Keane told Sky Sports News. "And I understood that.

"But I signed a contract, and I expect the clubs to honour that contract. And I know circumstances have changed and, I repeat: I'm talking about the clubs that have money available to them.

"I've had discussions when I was at Nottingham Forest; I was literally on the same money for two years, I got a pay rise and I was told I was greedy.

"I went to Man United. Man United discussed with me they couldn't match Blackburn Rovers. Man United couldn't match Blackburn Rovers? Can you believe that?

"Eventually after a few years, I signed a new contract, Man United sent out letters to supporters saying season tickets had gone up because of my contract. The day I left the club, I sat in front of Ferguson and Gill, who discussed cash flow problems. Brilliant. Brilliant."