Fox Animation is developing “Confessions of an Imaginary Friend: A Memoir by Jacques Papier”, acquiring movie rights for Michelle Cuevas’ upcoming book, Variety has learned exclusively.

“Confessions,” which will be published by Dial Books for Young Readers in September, is the whimsical autobiography of an imaginary friend who doesn’t know he’s imaginary.

In the narrative, Jacques Papier has the sneaking suspicion that everyone except his sister Fleur hates him since teachers ignore him when his hand is raised in class, he’s never chosen for sports teams, and his parents often need to be reminded to set a place for him at the dinner table. He’s shocked when he finally learns that he’s Fleur’s imaginary friend and convinces Fleur to set him free.

Elizabeth Reddy is overseeing “Confessions” for Fox.

Cuevas is also the co-author of “The Masterwork of a Painting Elephant” and “Beyond the Laughing Sky.”

The deal was completed by Sean Daily of Hotchkiss and Associates with Emily Van Beek of Folio Literary Management.