Kelly had his position coaches discuss the incident with players in meetings. He said the team needs to set up meetings between Cooper and players who don't know him so they get to know Cooper better.
"We have to have some open communication to make sure that everybody understands what went on and that what Riley's doing to atone for that," Kelly said.
Kelly was at the Kenny Chesney concert in June at which Cooper screamed "a racial slur, although Kelly said he did not interact with Cooper that night.
In a video that appeared on Wednesday, Cooper appeared to get into an altercation, saying that he would "fight every n- here."
Cooper addressed the team before the walk-through on Wednesday night. After Cooper spoke, Kelly asked if anyone else wanted to speak. That's when Michael Vick and Jason Avant addressed the team.
Kelly said he was not allowed to divulge the amount of the fine. He noted that owner Jeffrey Lurie has been in touch with the league, which has been involved with the entire process.
"I know Riley made a heinous mistake. I was appalled by it. I was actually shocked by it," Kelly said. "Because since I've been here since April, that's not the Riley Cooper I know. But he accepted responsibility for it, and he's got to live with it. But I hope at some point in time, we get a chance to move on from it. Right now, I don't think it's something that's going to go away very quickly."
Contact Zach Berman at firstname.lastname@example.org. Follow on Twitter @ZBerm.