Radnor will co-star opposite Elizabeth Olsen (Martha Marcy May Marlene) in the love story.
Liberal Arts centers on a 35-year-old (Radnor), still yearning for the life of a college student, who must come to terms with his age and responsibilities.
Olsen, meanwhile, will play a 19-year-old college student who falls for Radnor’s character over a shared love of music and literature.
Tom Sawyer Entertainment and BCDF Pictures will co-produce, with filming expected to begin in May, while How I Met Your Mother is on hiatus.
Source: The Hollywood Reporter