The Championship match has been rescheduled, with fans joking that the “Wagatha Christie derby is on”.
Wayne Rooney and Jamie Vardy will go head-to-head for the first time since their wives’ libel case last year.
The trial was dubbed “Wagatha Christie” after Coleen Rooney accused Rebekah Vardy of leaking posts from her private Instagram account.
Rooney and Vardy’s clash on the football pitch will now be shown live by Sky Sports.
Birmingham confirmed that the broadcaster has selected the fixture and moved it to an 8pm kick-off on Monday December 18.
The Blues’ trip to Coventry has also been rescheduled to Friday December 8.
Reacting to the news on X, formerly Twitter, one fan wrote: “Wagatha Christie derby.”
Meanwhile, another added: “El Grassico derby on the box, get on.”
It will be the first time the former England team-mates have faced each other since the trial.
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Rooney is now the manager of Birmingham, having replaced John Eustace in the dugout last week on a four-year deal.
He is set to take charge of his first match as boss against Middlesbrough on Saturday.
As for Leicester, the Foxes are currently two points clear at the top of the Championship.
Captain Vardy has scored four goals in 11 league appearances so far this season.