According to an NFL release, Sharrif Floyd‘s contract did not toll into 2018, making the defensive tackle a free agent in 2018 (Twitter link). He does still have a grievance in settlement negotiations to determine how much he should have been compensated from the Vikings in 2017.
Floyd missed all of 2017 and all but one game the previous year after suffering a knee injury in the 2016 season opener. In September 2016, Floyd underwent arthroscopic surgery on that knee.
Floyd, 25, has played in 44 games and registered 9.5 sacks since being selected in the first round by Minnesota in the 2013 NFL Draft.