Sources said Palmer represents Oakland's top option after Raiders starting quarterback Jason Campbellsustained a potentially season-ending broken collarbone Sunday.
"Again, I can't speak for the Raiders and everything but I think our organization is very firm in the statement that Carson is, as everybody knows here, retired," Bengals coach Marvin Lewis told NFL Network Monday. "We have moved on and that's enough to be said because we don't need to make anymore headlines for any reason other than what we do on Sundays."
Oakland has made preliminary calls to free agents Trent Edwards and David Garrard, among others, but nothing is imminent, and a deal might not materialize. Raiders coach Hue Jackson could end up going with backup Kyle Boller as the starter in the short term. Rookie Terrelle Pryor, who was suspended for the first five weeks and was unable to even practice, is the only other quarterback on the roster but is very raw at this point.