That means Overbaugh will become an unrestricted free agent next week.
Overbaugh replaced the injured McDermott in Week 17 and played both postseason games for the Vikings. However, those are the only NFL games Overbaugh has played in his career.
McDermott, 28, has served as Minnesota's long snapper the past three seasons, and he played one season each for the Baltimore Ravens and San Francisco 49ers.
He is expected to be ready for the 2018 season.