Rust is a native of Pontiac, Michigan, and a lot of times when long-time vets get moved out for a rebuild, the team tries to do right by the player, which Dubas has done many times, and moving Rust 'back home' seems quite feasible.
It will hard to get a first-rounder for Rust, considering his age, but if the Penguins receive two solid prospects in Mazur and Becher, Dubas could settle for a second rounder. With three years left on his deal, this is far from a 'rental' situation for any team acquiring Rust.