If you are a college QB, you have to both decide when to come out and be ready to go from day 1. A lot still depends on where you land, but the goal is to be good enough to sign that monster 2nd contract. Top 5 pick is guaranteed $33 to $40 mill from Caleb down to Alt at #5. Life changing money, but that 4 year rookie deal is now like 70-80% of what 1 year AVG is for the 2nd contract for a QB.
So, Lance, Z. Wilson, Trubisky, Darnold, all got paid well on their rookie deal, but didn't secure a big 2nd contract.