Will Rihanna, Coldplay perform at Super Bowl?

Musicians Katy Perry, Rihanna and Coldplay are likely to perform at the Super Bowl if they're willing to cough up the cash.

Super Bowl is the annual championship game of the National Football League (NFL). It is expected to take place Feb 1, 2015 at the University of Phoenix stadium in Glendale here.

According to a report published in the Wall Street Journal, the NFL has already established three frontrunners for the 2015 half-time performance - Perry, Rihanna and Coldplay. But now there's apparently a cash-fuelled catch behind the iconic gig, reports eonline.com.

Upon informing the musical acts of their candidacy, the NFL also asked the hitmakers' representatives if they would be willing "to contribute a portion of their post-Super Bowl tour income to the league, or if they would make some other type of financial contribution, in exchange for the half-time gig," the Wall Street Journal reports.

The request was ill-received by the half-time contenders, as artists have never previously paid to perform at the annual championship game.

While it's currently unclear how much money the league is seeking, NFL spokeswoman Joanna Hunter said that the only goal is "to put on the best possible show."

"Our contract arrangements with artists are confidential," Hunter said.