News of the project first emerged in June when Foxx shot a trailer for the show to pitch to networks.
According to Deadline, Tommy's Little Girl focuses on a young girl raised by mafia members who grows up in an orphanage after her family are murdered.
As an adult, the character becomes an attorney who acts as a trained killer at night in an attempt to get revenge. The story also revolves around the woman's search for her last surviving relative.
Selma Blair, Paul Sorvino, Tony Sirico and James Russo all starred in Foxx's trailer and are reportedly still linked to the project, although they have not yet signed deals with NBC.
Foxx is also developing a midseason sketch show for Fox.