The Iowa State Cyclones have virtually an entirely new roster heading into Year 1 under head coach Jimmy Rogers. With Matt Campbell’s departure, more than 50 players entered the transfer portal, leaving Rogers with a lot of work to do. He and his staff should be commended for the level of talent they were able to bring to Ames, as the team can compete once again. However, there is one position that remains a bit of a question mark, and that is running back. Depth and experience are major concerns, and it doesn’t help that one of the players projected to play a key role in the backfield suffered an injury during spring practice. Salahadin Allah, a transfer from the Oregon State Beavers, was viewed as a potential workhorse running back for offensive coordinator Tyler Roehl. He was expected to play a major role on early downs to help set the tone for what Roehl wants to be a physical and aggressive offense.…