Fox Sports first reported the move.
DeFilippo will join new offensive coordinator Frank Reich, who struck a deal with Philly on Wednesday, Rapoport reported.
In his one season as offensive coordinator in Cleveland, DeFilippo helped make lemonade out of the Browns' quarterback lemons. He had some sniffs at OC jobs this offseason -- including with the Rams -- but will move back to quarterbacks coach, a position he's held in both the NFL and college level from 2007-2014. DeFilippo was heavily credited with helping Derek Carr improve down the stretch of his rookie season in Oakland.
Now, the experienced quarterbacks coach will try to help boost a wayward signal-caller situation in Philadelphia, where a Sam Bradford return is the top option currently on the table.
In other coordinating news with a link to Philly, former Eagles offensive coordinator Pat Shurmur will talk to the Rams about their passing-game coordinator job, according to Rapoport. If hired, Shurmur would fill the pass-game coordinator role alongside Rob Boras, who is expected to become the new OC in Los Angeles.