It has been a tough season for quarterback Murray and the Cardinals who are now 4-8 for the season following a dramatic 25-24 defeat to the Los Angeles Chargers last weekend.
Following that loss, Murray drew more attention to the reported tensions between himself and head coach Kliff Kingsbury when he said the Cardinals were "schematically f****d". Earlier this season, the two were involved in a heated exchange during a win over the New Orleans Saints.
Cornerback Peterson, who played with Murray for two seasons and is now with the Minnesota Vikings, said on the 'All Things Covered' podcast: "Kyler Murray don't care about nobody but Kyler Murray. That's just a matter of fact."
He added that Kingsbury will wind up as a scapegoat for the Cardinals' struggles, saying: "Ain't no maybe, he will. He will be. He will be. And the crazy thing about it, the guy who hired him will still have a job."
Murray took exception to Peterson's jibes and issued a blunt riposte on social media.
He wrote: "This isn't true…you on some weird s***, you got my number, if you really felt like this as a 'big bro' or 'mentor' you supposed to call me and tell me, not drag me so your podcast can grow…"