3. RB Eric Gray
Despite being taken in the fifth round of this year's draft, there was a reasonable amount of hype surrounding Eric Gray entering the season. While most of this had to do with the ongoing Saquon Barkley contract situation, it still seemed like Gray could potentially have been the RB2 for the Giants.
Through the first seven games, Gray has massively disappointed to the point where he may not have a role on the team once he returns from injury. Not only has Gray rarely seen the field as a running back, but even in the chances he's been given as a punt returner, he's looked terrible. Gray has muffed two punts this season, both coming in the last three weeks, and as a pure returner he's looked unremarkable to the point where he's been benched on multiple occasions.
In all fairness, this is likely a position Gray never should have been placed in, but it's still one he had to learn this summer, but hasn't. Maybe in the future Gray can carve out a role as a solid rotational back, but as of now, it definitely isn't going to happen this season.