The issue is the payment structure of his signing bonus. The Jets are trying to pay it in 2 yearly installments, with the majority of it in year 2. It's far from a record amount as 1 top draft pick signed this season with a lesser amount year 1.
The Jets gain no cap relief at all with the structure as the signing bonus is prorated over the life of the contract.
Q's reason for wanting 100% up front is due to the amount of state tax withholding. He is currently a resident of Alabama and will save $100k by receiving the income now vs next year as a NJ resident.
It's actually nice to see a kid looking at his finances intelligently. On the Jets end, it's one of two things causing their reluctance. They are either trying to manipulate the cash spending floor rule, or Woody is wanting to gain another years return on where ever his cash is invested increasing his profits.
I'm sure in the end they will come to a resolution sooner rather than later.