The only other assumption would be that they need £40k to operate, in addition to the assumption that a main team sponsor would be found, hence the reason Readypower being prepared to step aside if another team sponsor could be found, then the Frost money would go towards the 40K.
That would be the only logical explanation I can come to.
Edited to add, sincerely hope Peterborough do line up in 2015, a great track that should not be allowed to be lost to the sport through mis-management.