3 Dolphins whose roster futures are falling apart at the bye week

Miami Dolphins wide receiver Tyreek Hill | Megan Briggs/GettyImagesThe Miami Dolphins' recent improvements may end up being enough for Mike McDaniel to keep his job, but this team still has a lot of work to do before it's ready to be a contender. After moving on from general manager Chris Grier in the middle of the season, it may be time for the Dolphins to kick off a full-scale rebuild.

At 4-7, the Dolphins are likely already out of the playoff race. But that doesn't mean that the next six games don't matter. For players without secure contracts, the remainder of the season represents the chance to stay on the roster. With a rebuild potentially on the way, very few players are guaranteed to…