FIFA and ARAMCO announced the partnership in April 2024.
The letter also cited activist Loujain al-Hathloul.
She was abducted in the UAE and transferred back to Saudi Arabia in 2018.
Becky Sauerbrunn, Jessie Fleming and Sofie Junge PedersenGetty Images
She was released from jail in early 2021 but is still subject to a travel ban.
For now, the Zurich-based soccer body does not look set to dissolve the agreement.