Warner Bros. is reportedly trying to get Leonardo DiCaprio to star in a standalone, Joker origins movie.

The movie is set to be directed by Martin Scorsese, and Warner Bros. is hopeful they can use that to lure DiCaprio into the comic book world.

According to TheHollywoodReporter:

Sources say Warners will make an ambitious attempt to use Scorsese to bring Leonardo DiCaprio into the world of comic-book movies. Certainly, Scorsese’s involvement in The Joker film, which The Hangover filmmaker Todd Phillips would direct, could elevate and diversify the studio’s contributions to the genre, creating the potential to make awards-worthy films such as Christopher Nolan’s The Dark Knight trilogy.

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The reports state that any potential deal is miles from completion though, with Scorsese’s deal not even on paper yet.

Not everybody is pleased with the reports though, with current Joker actor Jared Leto not impressed with the idea. Leto, who played the psychopathic villain in Suicide Squad, is scheduled to reprise the role in the movie’s sequel and a Joker-Harley Quinn love movie.

Jack Nicholson put on the Joker’s garish smile in 1989’s Batman, while Heath Ledger won a posthumous Oscar for his Joker role in The Dark Knight.

Scorcese and DiCaprio have made five successful films together over two decades: The AviatorGangs of New YorkThe Departed, Shutter Island and The Wolf of Wall Street.