The Dolphins are auditioning linebacker Reuben Foster (Twitter link via Barry Jackson of the Miami Herald). Foster is now healthy — per Jackson’s sources — and eager to mount another comeback. 
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Foster has history with new Dolphins head coach Mike McDaniel, dating back to their 2018 season together with the Niners. The former first-round pick has missed the last three seasons following multiple knee injuries and surgeries, but he could offer serious upside if he’s truly healthy.
Foster has hardly been seen since he was released by the Niners roughly four years ago. Washington shocked the world by claiming him off of waivers, but he never saw the field in D.C. Foster suffered an ACL tear in 2019, further pushing his career off course. He also spent 2020 on IR. Between the suspensions and injuries, the 28-year-old has played just 16 total games as a pro.
In those 16 games for the Niners, Foster registered 101 tackles and two passes defensed.