PHILADELPHIA -- The Arizona Cardinals and Chicago Bears have both requested to interview Philadelphia Eagles quarterbacks coach John DeFilippo for their head coaching vacanies, a source tells ESPN's Adam Schefter.

DeFilippo has been the day-to-day overseer of the development of quarterback Carson Wentz, who blossomed into an MVP candidate in the second year of his career before tearing his left ACL in Week 14 against the Los Angeles Rams. Wentz finished second in touchdown passes (33) despite missing the last three games of the season.

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The Eagles' brass has been reaping the benefits from their decision to load the staff up with quarterback experts (head coach Doug Pederson, offensive coordinator Frank Reich, DeFilippo). It's a good bet that other teams around the league will copy this approach, especially those that have a young quarterback prospect on the roster or plan on acquiring one this offseason. The Bears certainly fit that description with rookie Mitchell Trubisky in the fold, while it certainly seems possible that the Cardinals will look to add a quarterback. DeFilippo also has a history with veteran Carson Palmer, who played for the Oakland Raiders in 2012 when DeFilippo was the quarterbacks coach there.

DeFilippo, 39, has the reputation of a coach on the rise. While making the jump from QB coach to head coach is not common, he does have a year as an offensive coordinator (with the Cleveland Browns in 2015) under his belt.

DeFilippo is not the only Eagles assistant drawing interest. Defensive coordinator Jim Schwartz has already been linked to the New York Giants and could end up with multiple interviews. There's a chance offensive coordinator Frank Reich gets a look as well.