What happens to the Orgeron plan if

Herman lands at Texas and takes Aranda with him? Then what? Do we find another defensive genius? Its a really weak plan to base your future on since Aranda is the base of the success of this team this year. This means you have to make sure Aranda cannot leave. DO you pay him as much as your head coach? What Offensive coordinator our there is good enough to come in here and produce and is not worthy of a head coaching position somewhere? I am really confused.