If Sherrod ever truly gets healthy, which obviously is a big if, I think he will have as much of a chance of contributing as he did in his rookie season. He'll have to put in a lot of work to get back up to game speed and such, but at least the mental side of things should be a little easier after a couple years of watching film and studying the scheme. After awhile of competing and providing depth, it's possible he could steal a starting spot at either left or right tackle, especially if an injury occurs.
If he's healthy, I think he'll practice and play his way onto the field, eventually. It all depends on whether or not he'll ever truly be "healthy" enough to be an effective player again. He has the intelligence and the ability, he just needs his body to allow him to show it.