Do the Bear's overspend on their rookies?

I was wondering if teams, such as the Bears, that are famous for signing rookies early end up overspending? We are entering into the time period where the first rounders start negotiating and begin dominating the football press. I honestly don't have time to do any of the research since I take the bar exam in 10 days. I was hoping some of the excellent writers on this site could take this and run with it. Just an idea.