Ryan Phillipe, currently on screen in Robert Altmans' Gosford Park is nearing a deal that will put him onscreen with Liam Neeson in the upcoming Exorcist prequel. Neeson is playing Father Merrin when he first comes into contact with Satan, while on a missionary trip to Africa near the end of WWII. Merrin loses his faith and struggles to find God again to do battle with the devil. Phillipe would play Father William Frances, a young priest who doesn't understand how one could lose his faith. Frances must also face the devil himself... possibly with dire consequences.
Dont't forget to also check out: Exorcist: The Beginning