Moving on to running backs:
Probably leaving:
Trey Sermon: What a crazy year. Did mostly nothing in his first few games. Looked like Walter Payton in the B1G Championship and against Clemson. Then got hurt on the first series against Alabama. I can only assume he is leaving given he's a running back and been in football a while, and if he does leave he will be in the OSU record books for most rushing yards in a game. He did go through Senior Day and accepted an invite to the Senior Bowl, though I'm unsure what his injury was.
Demario McCall: He's been around for five years and never quite made much of an impact. Despite being a fifth year senior, he didn't go through senior day, so I suppose he might come back for a sixth year to return kicks and what not. Anything is possible.
Probably returning:
Master Teague: Never quite got going as he recovered from an Achilles injury, and then when the running game got going he got a concussion and Trey Sermon got all the run. Then when Sermon was injured against Bama, he played the whole game but was mostly ineffective. He is eligible to go pro, and the running back room looks a bit crowded next year, so you never know how this will play out. But he would be the main returnee, so we will assume he comes back.
Steele Chambers: The redshirt frosh had 9 carries for 86 yards on the season, 8 of them early in the season, and he didn't play against Alabama or Clemson. Not sure why that happened other than he lost a fumble against Rutgers and only had one more carry after that game. He was also a linebacker prospect so It's not inconceivable he would get a look on defense.
Marcus Crowley: Another second year guy, he got some carries as a ture freshman, but battles injury and didn't get any carries until the Alabama game, where he had 6 carries for 14 yards in garbage time. Another guy who will probably take a long look at the room before deciding what to do, could be a transfer candidate.
Miyan Williams: A true freshman this past season, he got a few carries, most memorably looking like a bowling ball with legs against Clemson for a series. Would assume he is coming back to bowl over a few more guys.
Incoming:
TreVeyon Henderson: A five star prospect and top running back on 247, he may be with the team now as he planned to enroll early. (FYI, no idea what the NCAA is doing with winter and spring practice). Anyways, these guys typically don't come to a school to sit around and watch, so every expectation is that he will compete for the lead back role right away.
Evan Pryor: No slouch himself, Pryor was a top 100 recruit out of North Carolina. Probably too much to ask to see him getting carries with such a crowded room, may be more of a redshirt candidate. He does have a reputation as a pass catcher, though, which might get him on the field.