Sam Allardyce wants damages from the FA over his sacking as England boss last year.
The Daily Mail reports Big Sam’s lawyers have sent a letter to chairman Greg Clarke and chief executive Martin Glenn.
He argues the FA did not confirm the facts before firing him.
And his representatives will further suggest their client did not breach terms of his employment.
Allardyce, 62, was axed in September 2016 — after 67 days and one game — when filmed talking about how to dodge FA rules.
An undercover Telegraph report filmed Allardyce allegedly discussing how to get around third-party ownership rules on player transfers.
But Allardyce and his lawyers have reportedly looked at the full transcript of the two meetings in question.
They argue he did nothing of the sort.
The 62-year-old is also unhappy he was not given time to provide evidence.
Allardyce was sacked within 24 hours of the Telegraph’s story being published.
The last 12 months has seen many ups and downs for Sam Allardyce
He accepted he made “an error of judgment” in attending the meetings and regretted comments about his predecessor, Roy Hodgson.
But he always maintained he was a victim of entrapment.
The FA are yet to respond to the letter.
Allardyce soon returned to management, taking over at troubled Crystal Palace in December last year.