Chris Pratt to Defend Vince Vaughn in Starbuck

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OAKLAND, CA - SEPTEMBER 19:  Actor Chris Pratt arrives at the premiere of Columbia Pictures' "Moneyball" at the Paramount Theatre of the Arts on September 19, 2011 in Oakland, California.  (Photo by Michael Buckner/Getty Images)
Actor Chris Pratt arrives to The Paley Center for Media's PaleyFest Honoring "Parks and Recreation" at Saban Theatre on March 6, 2012 in Beverly Hills, California. Photo: Michael Buckner/2011 Getty Images

Chris Pratt is eyeing a co-starring role in Vince Vaughn's Starbuck, about a man who anonymously fathers more than 500 children via sperm donation. When 142 of the families file suit to learn the Starbuck's identity, Pratt's character, a lawyer and single father of four, comes to his aid. The film, an adaptation of a 2011 French-Canadian comedy, will be penned and directed by original writer-director Ken Scott.