Sam Allardyce insists an unknown third party must have played a part in his sacking at Blackburn by making "derogatory" comments about him to the club's owners.
Allardyce was sacked last Monday along with assistant boss Neil McDonald by Blackburn's owners the Venky's group, who installed Steve Kean as Allardyce's replacement for an as yet undefined period.
Discussing his sacking, Allardyce told Sky Sports News: "I really can't get it out of my mind. I can't put my finger on it, I think that's one of the problems."
He added: "Having never really met the new owners and had little dialogue, somebody somewhere has obviously said something derogatory to get me out of this job.
"That's the one thing I want to find out because I want to find out why. If I can, I will, if I can't, I'll just have to move on with my life."
Allardyce believes McDonald would have been a better choice to succeed him than Kean.
Allardyce said of the former Carlisle manager: "That was a stranger one for me. If there was anybody capable of looking after the reins, with all due respect to Steve, it would be Neil McDonald.
"He had a close working relationship with the players as assistant manager, he's managed before, it would have been him to look after the football club until such time as maybe they appointed a new manager. But that wasn't to be either."
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