The six-time Tony winner, according to Deadline.com, will star in a film version of Michael John LaChiusa's Hello Again.
Tom Gustafson will direct a screenplay by Cory Krueckeberg. Additional big names are being sought for the film; a casting notice states the film has the "goal of creating thoughtful, tasteful, beautiful, boundary-pushing sexually realistic situations."
A spokesperson for McDonald told Playbill.com that the acclaimed singing actress has been approached about the project, but nothing is confirmed at this time.
Hello Again has words and music by LaChiusa, and is suggested by Arthur Schnitzler's 1900 Vienna-set play La Ronde, which shows the connections made between ten related couples. Lincoln Center Theater produced the musical Off-Broadway in 1993-94; a cast album preserves the score.
The first major New York City revival of the musical that follows the sexual encounters of various lovers opened in March 2011 at Transport Group.
A five-time Tony Award nominee, LaChiusa has written the Broadway musicals The Wild Party, Marie Christine and Chronicle of a Death Foretold. His Off-Broadway credits include Hello Again, First Lady Suite, Little Fish, See What I Wanna See, The Petrified Prince, Bernarda Alba, Giant and Queen of the Mist.