It seems Ryan Reynolds is about to get a new castmate for his upcoming superhero film. The Hollywood Reporter's Heat Vision Blog is reporting that actor Peter Sarsgaard is in negotiations to join the cast of Green Lantern.

If he joins the cast, Sarsgaard will play Dr. Hector Hammond, a pathologist who receives psychic abilities after he discovers a meteroite.

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Sarsgaard would join the cast that includes Ryan Reynolds as Hal Jordan, who becomes the title character and Blake Lively, who recently signed on to play Carol Ferris. The film, directed by Martin Campbell, is set for a June 17, 2011 release date.