Each Club’s claim of such credit, if any, shall be made by written notice to the NFL prior to the beginning of the 2021 League Year. Additional Room shall become effective upon receipt by the NFL of such notice. The NFL shall promptly forward such notices to the NFLPA. Clubs shall identify in writing to the NFL prior to the beginning of each of the 2024–27 League Years the amount of any offset that shall apply for such League Year. If a Club has not identified its entire offset as of the first day of the 2026 League Year, then the remaining offset balance shall apply in the 2027 League Year.