CBS has put in development Thankless, a hybrid comedy from LeBron James & Maverick Carter’s SpringHill Entertainment, former How I Met Your Mother writers Craig Gerard and Matt Zinman, and Warner Bros. TV.

Co-written/executive produced by Gerard and Zinman, Thankless centers on a group of ambitious assistants who pursue their dreams at a sports agency in Chicago. James and Carter executive produce for SpringHill. Warner Bros. TV is the studio.

This is the third sale for SpringHill Entertainment in the company’s first TV development season under the expansive agreement it signed with Warner Bros. Entertainment last year for film, TV and digital projects. It joins There Goes the Neighborhood, a Cleveland-set single-camera family comedy set up at NBC, along with a sports medicine drama with penalty, also at NBC. SpringHill’s series portfolio includes Starz basketball comedy Survivor’s Remorse, Disney XD’s inspirational series Becoming, upcoming NBC game show The Wall and reality series Cleveland Hustles on CNBC.