I like Benny, and would love to see him back for depth purposes. I mean if you have a guy that's effective in short yardage, doesn't fumble, and doesn't take too many negative runs, he's perfect as a backup.
The problem is I fully anticipate Ridley to take a step up this year and get more snaps. If so, he's a much better runner than BJGE, and assuming the fumbles are improved he actually adds a dimension to the offense rather than just breaking even.
Combine that with the fact that Woodhead will always get his snaps due to his abilities in the passing game, and BJGE may not even WANT to play here when he can get 15+ carries consistently somewhere else.