Kyler Murray has appeared to address the speculation that he's upset with the Arizona Cardinals.

Murray posted on Instagram on Monday that "all of this nonsense is not what I'm about" and vowed to "grow and get better."

The post came a day after sources described the quarterback to ESPN as self-centered, immature and someone who points fingers.

"I play this game for the love of it, my teammates, everyone who has helped me get to this position that believed in me & to win championships. All of this nonsense is not what I'm about, never has been, never will be. Anyone who has ever stepped between those lines with me knows how hard I go," he wrote. "Love me or hate me but I'm going to continue to grow and get better."