It's also his job to know what the rest of the needs of this team are, and to plan accordingly. If he sees that the defense completely sucks this season (high probability), then he knows that he has to spend a higher percentage of the available cap room to fix that problem. Doing so would mean that there is less available to sign someone who, by all appearances, is an average NFL QB.Isn't it Scot Mccloughans job to know that after years of tape and more then a full seasons worth of quality starts?
He also knows what other contracts around the league are expiring, and which players from other teams he covets.