The move clears space on the roster for QB Vincent Testaverde. Niklas was signed recently but lasted only one practice in Tampa Bay before going down.
Niklas, 26, is a former second-round pick of the Cardinals back in 2014. He played out the final year of his four-year, $4,023,298 contract and made a base salary of $968,631 for the 2017 season.
Niklas signed with the Patriots to a one-year deal back in April of last year but was cut loose after a few months.
In 2017, Niklas appeared in 15 games for the Cardinals and caught 11 passes for 132 yards receiving and one touchdown.