I’m not a lawyer, but if a party that is included in the agreement has materially breached it, would that not take precedence over the breaking the NDA? Also, let’s say he breaches this NDA, when they go to enforce it, isn’t the information already public at that point and if they aren’t fulfilling the contract wouldn’t they be able to offset damages from the breach agains the nonpayment?
His future earning potential is crushed from this situation, if he was to take the hit of breaking this NDA, it would likely be recouped through future NFL earnings that are now off the table with this.