The 39-year-old actor has joined his "Veep" co-star Matt Walsh in the film, co-written by Borders and David Henry, reported Deadline.
Walsh plays a bourbon salesman who is fighting off 50 and unexpectedly proposes to and is rejected by his best friend's 24-year-old daughter under the Eiffel Tower.
Scott stars as Liam, a rough, outspoken former professional footballer, who becomes Stuart's unlikely friend.
Other cast includes Judith Godreche, Ary Abittan, David Wain, Gary Cole and Michaela Watkins.
It is currently being filmed in France.