With Alfano being a true DE and weighing over 280 lbs I don't see him doing it. I think we see Chris Allen step into the role and he is a good one but is coming off a season ending injury from last year.
Allen would have been in line to be with the 1s anyway. Anoma hadn't secured a role with the starters (
edit: first organizational groupings) yet. So we're good so long as we don't have any more injuries.
Jennings on one side. Lewis on the other. Any combination of Davis, Ray, Dale, Mathis, Young, Barmore, Eboigbe inside. With Allen providing extra depth behind either of those guys, and not forgetting that Moses also plays with his hand in the dirt. This will mean that McMillon, Moody, Lee, and/or Harris have been able to come along and run point in the middle.
All that to say, we will be fine....better than fine.