OLine FA

What are the chances we can beef up our OLine in Free Agency? Is there anyone we can realistically get? I'm not sure if drafting OLine would be the route unless there's some true beast on the board, due to other needs, the learning curve and the real need to protect Stroud NOW. I'm also not recalling very many successful Olinemen drafted by the Texans, as we've always seemed to struggle in this category.