The open-wheel category that began last year combines motor sport with football, and the French daily L'Equipe reports that Bourdais, 30, has agreed to drive for the Spanish La Liga team Sevilla FC.
The Frenchman was recently ousted by Toro Rosso in favor of Jaime Alguersuari, and now he replaces Sevilla's Argentine driver Esteban Guerrieri.
Bourdais will make his Superleague debut at Portugal's Estoril track this weekend.
09/01/09 Four times Champ Car champion and F1 reject Sebastien Bourdais replaces Esteban Guerrieri at Sevilla, according to French newspaper l'Equipe. The Frenchman was left without a drive after being ousted at Toro Rosso.
It was expected that Bourdais would return to the US to race for the former team of Dutchman Robert Doornbos NHL Racing.
Another Frenchman will return to Superleague Formula, as Franck Perera moves to AS Roma. Perera made his SF debut last year, also at Estoril.