If he made a mistake the agreement will require a tremendous amount of money, as the company claims, or lose benefits, and information provided to other companies.
If he made a mistake, the agreement will need to be adjusted based on the amount of money, but the company claims, or loss of interest and information to other companies.
If he made the agreement will have to be adjusted is a large amount of money, but the company claim or loss of benefit and information to other companies.