NFL Rumors: Josh Allen, Stefon Diggs 'Remained Cordial' amid Bills' Offensive Changes

Despite his apparent frustration over a lesser role within the Buffalo Bills' offense during the second half of last season, wide receiver Stefon Diggs reportedly didn't clash with quarterback Josh Allen behind the scenes.

According to ESPN's Jeremy Fowler, team sources said Diggs and Allen "remained cordial" last season even as Buffalo's offense underwent a "philosophical shift" under offensive coordinator Joe Brady.

Through nine games last season, Diggs was on pace for another huge statistical season, as he racked up 70 receptions for 834 yards and seven touchdowns. However, his production dropped off a cliff over the final eight games to the tune of 37 catches for 349 yards and one score.

The biggest reason for the dip in Diggs' production was an offensive coordinator shift, as the Bills fired Ken Dorsey after a 24-22 loss to the Denver Broncos in Week 10, replacing him with Brady.

Per Fowler, the Bills went from running the ball roughly 25 times per game under Dorsey to running it an average of 38.8 times per game in Brady's first four contests as the OC.

The change worked wonders for the Bills, who won six of their final seven regular-season games and came from behind to win their fourth consecutive AFC East title.

Although Diggs was still clearly the Bills' No. 1 receiver under Brady, he went from getting 10.2 targets per game under Dorsey to 8.3 per game under Brady.

All of that led up to the Bills trading Diggs to the Houston Texans during the offseason. In an interview with Clay Skipper of GQ Sports last month, Diggs suggested that he wanted the trade to happen, saying: "Things had to shake because I kind of wanted them to shake."

That resulted in the end of Diggs' four-year tenure in Buffalo, which yielded him four Pro Bowl berths, one First Team All-Pro selection and four seasons with at least 100 receptions, 1,100 yards and eight touchdowns.

Additionally, the Bills won the AFC East every year he was in Buffalo, and Allen blossomed into one of the league's top quarterbacks.

As far as Allen is concerned, there are no hard feelings, as he made his feelings regarding Diggs clear last month, saying, "I love 14, I still do," per ESPN's Alaina Getzenberg.

While there is still plenty of season left to be played, the decision to split seems to have worked out well for both Diggs and the Bills so far.

In Houston, Diggs has 25 receptions for 233 yards and two touchdowns, plus a rushing touchdown through four games, and the Texans are 3-1.

Meanwhile, the Bills are also 3-1, and Allen is having an MVP-caliber season with nine total touchdowns and no interceptions.

On Sunday, Allen and Diggs will face each other for the first time since the trade, as the Bills will travel to Houston to take on the Texans in a battle between two of the AFC's best teams.