No, however id sign Nick Chubb for a similar reason not necessarily for him to earn 53 man roster spot but a veteran PS spot.
Seahawks have a few bigger, highly physical type RBs as well as the obvious rookie in Price that could benefit from having a veteran RB in the room in a mentor type role.
And they also have two rehabbing RBs, Charbs more so than McIntosh, as ZC is further behind, that can learn from Chubb’s own experience and struggles recovering from his gruesome knee injury. And perhaps gain better insight on the processes both physically and mentally and whether or not to push too hard or too little.