Ready OL

What is the minimum estimate time to have a new OL signee ready to contribute in a meaningful way? My thoughts are redshirt as freshman, special teams after redshirt then start contributing as a third year sophomore. I remember Travis Swanson saying a redshirt as a freshman was absolutely necessary and Travis was as good as they come. With this schedule it could be the fall season of 2021 before we are respectable, maybe 2020 if we can recruit a boat load of Travis Swanson’s. Maybe JC linemen can save us but an entire line made up of them would take a lot of awesome evaluations and luck.