Othmann agreed to terms on a one-year, two-way contract with Calgary on Friday.
Othmann was limited to just 19 regular-season games for the Flames and Rangers last year in which he tallied two goals, one assist and 15 shots. Considering the two-way nature of his deal, the 23-year-old Othmann figures to start the year in the minors, but he could earn NHL opportunities should the need arise.