The Cardinals are at least interested in exploring a trade with the Raiders for quarterback Carson Palmer, according to NFL sources. Palmer's status with the Raiders is in question after the team reportedly agreed to a trade with the Seahawks on Friday for backup quarterback Matt Flynn. There are several hurdles to clear before the Cardinals would agree to a trade. First, the Cardinals would not be willing to part with more than late-round draft picks. And Palmer would have to agree to a restructured contract, one that pays him considerably less than the $13 million he is scheduled to make in salary this season. Palmer, 33, could provide a bridge to the future for the Cardinals, who have been searching for Kurt Warner's replacement for four consecutive off-seasons.