New revelations in an NRL breach notice against the Parramatta Eels reportedly show the club secretly arranged almost $500,000 in deals for failed NFL convert Jarryd Hayne since 2013.

Official documents and boardroom minutes show a trail of salary cap discrepancies in the star fullback's third party deals with the club from 2013 to 2015, News Corp reported on Tuesday.

They allegedly include cash payments, first class overseas travel and car expenses adding up to $465,000, all hidden from the NRL.

The revelations follow Hayne's surprise news on Monday that he was quitting the San Francisco 49ers and a US gridiron career to chase Olympic gold with Fiji's Rugby Sevens team.

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Third-party payments to players must be done on an arm's length basis from the club and it's a breach of salary cap rules if a club makes a payment on behalf of third parties.

News Corp said there was no suggestion Hayne was aware his payments were contrary to NRL rules or that Hayne had done anything wrong.

- AAP