US National Football League has asked Rihanna, Coldplay and Katy Perry if they'd be willing to offer a percentage of their future tour earnings or "some other type of financial contribution" to perform at the Super Bowl Halftime Show down in February.

According to The Wall Street Journal, the theory is that the exposure is so great, that artists should pay for some of it.

NFL's director of corporate communications, Joanna Hunter has not confirmed or denied the allegations but told TheWrap this week that, "Our only goal with the Pepsi Super Bowl Halftime Show is to put on the best show for the millions of fans who watch," adding, "Our contract arrangements with artists are confidential."

Despite the fact that the specific dollar amount or percentage was not specified, and the NFL "got a chilly reception from the candidates’ representatives," the Journal wrote.

Meanwhile reps of Katy PerryRihanna and Coldplay have made no comment yet.

Typically, the football league doesn't pay its halftime performers. But it does cover travel and production costs, which can carry a very hefty price tag. Super Bowl XLIX will kick off on Feb. 1, 2015 in Arizona.

Last year's Pepsi Super Bowl Halftime Show — starring Bruno Mars and featuring The Red Hot Chili Peppers — pulled in a record 115.3 million viewers, more than the game itself.