Cooper, Kelce, and several other Eagles, including coach Chip Kelly, were at the concert at Lincoln Financial Field. During one song, Chesney brought the Eagles, most of whom were white, up on stage. Photos of the moment were posted on the team's website.
Later on, Cooper had an altercation, he said, with an African American security guard. In the video, first posted on Crossingbroad.com, Kelce is briefly shown placing his hand on an obviously agitated Cooper. The receiver then said, "I will jump that fence and fight every n- here."
Kelce said he didn't recall hearing what Cooper had said.
"To be honest, I don't really recall the whole incident and what was said," Kelce said. "Really, all I recall was a huge altercation between him and a few security guards. I was trying to calm him down at the time and trying to separate all of them.
"I honestly don't recall those words being spoken at the time. Obviously, it's not an excuse, regardless of what was said, to say that."
While a number of Eagles have come out in support of Cooper, there are others, including running back LeSean McCoy, who admitted their feelings toward their teammate have changed.
Kelce said he was standing by Cooper.