David Cronwell said in an email to The Associated Press Friday he and Vitt had talked about the appeal. ProFootballTalk.com first reported Vitt's decision.
"Joe Vitt and I discussed our concern that his appeal be consistent with the association's view that coaches also coach sportsmanship and fair play."
The agent said "based on these discussions, I am confident that Joe's appeal and his long history in the NFL are consistent with our belief that there is no place at any level of football for bounties that target players."
The NFL suspended Vitt, who also coaches linebackers, for the first six games of the season. Earlier Friday, a person familiar with the decision told The Associated Press Sean Payton was appealing his season-long suspension.
The league also slapped an eight-game suspension on general manager Mickey Loomis.