^this.
They have experience as well so if they had some foresight and signed a 2-3 year deal looking at the age of Dura and Sigmund, then they may not be bench material for long and playing in a stable environment.
Or from the players point of view, what teams have suspect and/or aging CBs and have stable owners. We fit the bill (age of CBs, not suspect) so I would have thought we would be a smart move for any decent CB that is nervous at their current club.