PHILADELPHIA (973espn.com) - Much was made about the quarterback-centric coaching staff that was put together by the Eagles to help Carson Wentz develop moving forward.

The triumvirate of head coach Doug Pederson, offensive coordinator Frank Reich, and quarterbacks coach John DeFilippo all played the position and by all accounts did a nice job helping Wentz progress through his first season in which the North Dakota State product set a new NFL record for completions by a rookie.

Overall, Wentz completed 379 of 607 throws for 3,782 yards with 16 touchdowns and 14 interceptions despite lacking any real playmakers at the wide receiver position.

Although Wentz struggled with his mechanics late in the campaign and may have suffered from a bit of a tired arm, all signs are pointing up for the 24-year-old signal caller.

The likelihood that the Eagles will be able to put together the same QB incubator for Wentz in Year 2, however, seems to be regressing by the day.

Sources in Buffalo say the Bills want to interview Reich, a long-time backup to Jim Kelly with that organization, for their head-coaching position.

Reich, 55, interviewed for the same job back in 2015 when Buffalo went with Rex Ryan and his familiarity in the city is a positive for him.

The Bills are also interested in elevating their interim coach Anthony Lynn, and have requested to interview Carolina defensive coordinator Sean McDermott, a former Eagles DC under Andy Reid.

Meanwhile, an NFL source tells 973espn.com that DeFilippo is on the short list to be the Jets’ new offensive coordinator after Chan Gailey retired on Tuesday.

A former OC in Cleveland before arriving in Philadelphia, DeFilippo had a prior stint as the Jets’ QBs coach in 2009.

-John McMullen covers the Eagles and the NFL for 973espn.com. You can reach him at jmcmullen44@gmail.com or on Twitter @JFMcMullen