The 24-year-old is said to replace Irish actress Saorise Ronan as the frontrunner for the role, reports femalefirst.co.uk. Directed by Joss Whedon, the cast of the "The Avengers: Age of Ultron", includes actor Robert Downey Jr., Aaron Taylor-Johnson, Chris Hemsworth and Scarlett Johansson. The movie is set to release May 1, 2015.

Elizabeth Olsen
Elizabeth Olsen. Pic/AFP