Mohammed Ben Sulayem will face a challenge to his bid for re-election as president of the FIA, motorsport's world governing body, after a rival candidate emerged on Thursday.
The BBC reported American Tim Mayer, a former Formula 1 steward and son of former McLaren principal Teddy Mayer, would announce on Friday he was standing against the Emirati.
A news conference was called at a venue outside the Silverstone circuit ahead of British Grand Prix practice.
Mayer, 59, told the BBC last November that he had been fired via text message by an assistant to Ben Sulayem.
Ben Sulayem, an Emirati, is scheduled to attend the race which marks the midpoint in the Formula 1 season. He has already announced he is seeking a second term.
The FIA is the governing body for F1, the world rally championship and Formula E among other series.