Third-party lending company Thrivest Specialty Funding has asked a federal appeals court to temporarily block the NFL concussion settlement claims administrator from paying injured players whose settlement funds might be subject to third-party funding agreements.

Thrivest, which is one of three third-party lenders pursuing an appeal over the validity of several funding agreements they have with injured NFL players potentially entitled to settlement funds, filed an expedited motion to the U.S. Court of Appeals for the Third Circuit on Feb. 19. The motion asks the appeals court to impose a stay on processing the payments pending the outcome of that appeal.