Listen to Kenny Chesney on iHeartRadio

One of Kenny Chesney's special guests at his Philadelphia concert last month is apologizing for his offensive off-stage language.  Philadelphia Eagles wide receiver Riley Cooper tweeted Wednesday that he's "so ashamed and disgusted" with himself, admitting that he has "been offensive" and wants "to apologize" to his coach, teammates, and fans along with the community in general. 

He adds that what he did "was wrong" and "there are no excuses," and that he'll "accept the consequences" of his actions. 

The Philadelphia sports blog "Crossing Broad" has unveiled off-stage video of Cooper using the N-word as he threatened to "fight" every African-American person at the Chesney concert, while another clip shows him getting into a parking lot dispute after the show. 

Cooper had performed with Kenny at the event, which "USA Today" says was a concert highlight.  The country superstar welcomed Cooper as well as Eagles coach Chip Kelly and center Jason Kelce to join him in singing his ode to football, "Boys Of Fall."  Chesney has not commented on the matter. 

Photo Credit Getty Images