With potential starting assignments in Miami, Minnesota and Chicago, Pennington likely wouldn't go anywhere as a backup. Sure, he and Kansas City coach Herman Edwards have a long history together and share a strong relationship. But the difference from playing to sitting on the bench far outweighs a strong personal connection.
Also, the Chiefs' interest in Pennington only as a backup reaffirms their commitment to Brodie Croyle. That is likely only strengthened after Croyle's strong preseason debut in Chicago Thursday night. Expect Croyle to play better in training camp and in the preseason after both a strong performance against the Bears and after the news that the Chiefs are only interested in Pennington as a backup.