Clemmings, 26, is a former fourth-round pick out of Pittsburgh by the Vikings in the 2015 NFL Draft. He is final year of his four-year, $2.804 million rookie contract.
The Vikings elected to waive him as they trimmed their roster down to the 53-man limit last year and he was later claimed off of waivers by the Redskins. He was waived by Washington on Saturday.
In 2017, Clemmings appeared in six games for the Redskins.