Overview
- NFL Network’s Mike Garafolo and Ian Rapoport reported the Feb. 11 hire, which multiple outlets confirmed as completing Harbaugh’s offensive staff.
- Callahan will work under offensive coordinator Matt Nagy as quarterbacks coach and passing-game coordinator alongside senior offensive assistant Greg Roman.
- He brings a quarterback-development track record from Cincinnati with Joe Burrow after earlier QB coach roles with Matthew Stafford in Detroit and Derek Carr in Oakland.
- Callahan was fired by the Titans in October 2025 after a 1–5 start, finishing 4–19 in less than two seasons as head coach.
- The move follows his earlier interview for the Giants’ OC role and reported OC interest from the Chargers and Buccaneers, with his focus now on guiding second-year starter Jaxson Dart and veteran backup Jameis Winston.