Former United boss Ferguson, who retired in May after being in-charge for 26 year, is now a director at Old Trafford.
“Everything is about control and power [with Ferguson],” Keane said in a statement.
“He is still striving for it now even though he’s not manager – there’s massive ego involved in that.”
Not much has gone right with United after David Moyes succeeded Ferguson. The club sits ninth in the Premier League table having lost three games at Old Trafford already.
In a recent interview, Keane, who is now assistant manager of the Republic of Ireland, openly criticized his former squad and claimed his relationship with the former boss is “non-existent”.
The Irishman feels Ferguson’s praise for him in his recently released autobiography for “covering every blade of grass” in the 1999 Champions League semi-final second leg against Juventus was insulting.
“Stuff like that insults me. What am I supposed to do – give up? To be honest, I get offended when people throw quotes at me as if I’m supposed to be honored by them,” Keane was quoted as saying.
“That was my job – it’s like praising the postman for ¬delivering the mail.”