These guys will never give the impression they are rebuilding, let alone a 3 year rebuild, so I doubt Whitlock is traded. (Contreras also has 2 years after '26.)
Trading 1.5 year players like Duran might be asking too much, and his stock is so low, it's probably worth holding on to a slim promise he rebounds.
Bello's stock has tumbled as he and KC have many years of control left, so they go nowhere quickly.
Chapman and Gray are the two obvious considerations. Sandoval, IKF and Coulombe will bring back nothing and will be gone, next year. You can trade them at the deadline and not be screaming "rebuild." It's just giving up on the current season.
Story and Yoshida have too much salary lingering to be tradable, unless we attach a prospect, pay 70-85% or take back a salary dump.
Duran is not highly paid, but we couldn't trade him last winter, so who wants him now?