There is a rivals article (which is behind a paywall) that talks about the progress of the team so far.
It mentions that Brandon Herron runs a 4.40 40 on the big board in the weight room.
Does anyone have a picture of this said board? I would like to compare it to the amazingly accurate forty times that Florida had on their wall. IIRC someone on their team posted a sub 4.2 time.