The five-week production will be filmed at locations around Ireland and Northern Ireland.
Cork's Éanna Hardwicke is set to play Roy Keane, while Steve Coogan has been cast as Mick McCarthy.
He said the script and the cast are "fantastic".
"Ultimately it's a universal story about two men who wanted the same thing but just really couldn't agree on how to go about it," said Birney.
He added that Hardwicke's Keane is "stunning", and that Steve Coogan as Mick McCarthy would be "mind-blowing".
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