It reportedly upset Dallas Cowboys owner Jerry Jones when his mercurial, but dominant, young wide receiver Dez Bryant dumped agent Eugene Parker in November in order to sign with the Jay-Z-led Roc Nation.

If that upset Jones, the decision by Bryant to part ways with long-time advisor David Wells - as ESPN's Jean Jacques-Taylor reported Friday - may, in fact, prove to be the last straw for the Cowboys and Bryant.

With Wells out of the picture, the chances of Bryant landing a long-term deal from Dallas has suddenly become a "very distant likelihood," according to a report from Jason Cole of Bleacher Report.

"In fact, this means more than likely that Dez Bryant will play out this season, maybe one more, but almost assuredly will not have any kind of long-term future with the Dallas Cowboys if he is not with that trusted advisor who the Cowboys are well aware of from his work with guys like Michael Irvin and Adam "Pacman" Jones," Cole reports.

After a season in which he posted 88 receptions, 1,320 yards and 16 touchdowns receiving, Bryant has since been embroiled in seemingly endless controversy, from his agent switch, to rumors of a videotape from a Wal Mart parking lot security camera which could be potentially damning to his NFL future, to his recent decision to send a cease-and-desist letter to Wells, his former trusted advisor.

"According to sources I have talked to about David Wells and his relationship with Dez Bryant, he's vital in the eyes of the Cowboys, to making sure that Dez Bryant handles his life, stays on the right path and is a functional member of this team in the long-term," said Cole.

Wells, who spent time living with Bryant during high school and college, has an adviser agreement with Bryant that runs through 2016, per ESPN.

The Cowboys are reportedly very unhappy about the parting of ways and would like Wells to continue his relationship with Bryant.

"The Cowboys want Wells to remain closely involved with Bryant, whether it's providing security when he goes out to clubs or in handling some of his day-to-day responsibilities so the receiver can focus on football," writes Jacques-Taylor.

Despite the cease-and-desist letter, Wells was adamant that he would not turn over any documents regarding any aspect of his relationship with Bryant.

The Cowboys placed the franchise tag on Bryant this offseason, meaning that if and/or when he signs it he will make $13 million for the 2015 NFL season.