The Sydney Roosters' grand final celebrations in the US were partially bankrolled by Nick Politis and the club and are now expected to be reviewed by the NRL's salary-cap auditors.

Most NRL clubs could only dream of flying the bulk of their squad interstate let alone to Los Angeles and Las Vegas for belated premiership celebrations like the Roosters have.

Footing the bill: the Roosters have funded the premiers' grand final celebrations in the US, to the dismay of some of their NRL rivals. Credit:NRL Photos

Some rival club officials privately wanted to know why the Roosters' generosity would not have been included in their player or football department salary cap spend, which is set around $9.1 million and $5.7 million respectively.

"I would have thought giving a player a $10,000 holiday was a benefit,'' one club official asked.