Bolduc was placed on waivers by the Senators on Sunday, Bruce Garrioch of Postmedia reports.
Bolduc signed a one-year, two-way contract with the Senators in late June, and he'll presumably begin the year with AHL Belleville if he goes unclaimed on waivers. He made 68 regular-season appearances at the AHL level between Ontario and Belleville last year, recording six goals, 25 assists and 24 PIM.