The Buffalo Bills, with coach Rex Ryan and several high-profile additions this offseason, are appealing candidates for "Hard Knocks," the annual HBO series that chronicles a team's training camp.

However, the Bills aren't interested in participating, a team source confirmed Friday. General manager Doug Whaley previously told ESPN at the NFL owners meetings in March that neither he nor owners Terry and Kim Pegula were interested in doing the show.

The Bills cannot be forced to participate because they have a first-year coach.

A report Friday from ESPNCleveland.com stated that the Bills, Washington Redskins and Houston Texans were "potential participants" for the show.

Multiple sources told ESPN Redskins reporter John Keim that Washington was not interested in the show. ESPN Texans reporter Tania Ganguli tweeted Friday that the Texans are "favorites" to be featured on the show.