NRL boss David Gallop has demanded a please-explain from the Sydney Roosters over the club's backing of one of the officials named in the Melbourne Storm salary cap scandal report.

Roosters chief executive Steve Noyce said the club's recruitment manager Peter O'Sullivan, who cap auditor Ian Schubert says was involved in producing dual contracts when at the Storm, would keep his job at the club.

Gallop says the Roosters have been too hasty in backing O'Sullivan and the matter is far from being resolved.

"On legal advice there is no specific recommendation in relation to Peter O'Sullivan, just as we have not recommended the two former financial controllers be sacked by their current employers," Gallop said in a statement on Thursday.

"However, in relation to Mr O'Sullivan, that should not be taken to be the end of the issue.

"The report discloses serious and persistent past misconduct on his part and it would seem that he had not informed the Roosters of that at the time they employed him.

"We expect the Roosters to discuss with the NRL this employees' future once they have digested the report.

"The findings against him are serious and cannot be ignored."

Schubert's report said O'Sullivan had helped the rort's architect, former chief executive Brian Waldron, "set in train the wholesale cheating" that resulted in the five-year $3.8 million cap breaches.

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