The organisation also states that it amounts to the cost of any extra exposure M.I.A. received after flipping the bird. The rapper was not being paid for her Super Bowl stint.

As well as asking Madonna for the cash, the star - real name Mathangi 'Maya' Arulpragasam - also tweeted a screenshot of an email that seems to outline how she can pay up.

She accompanied the image with the caption: "THIS IS WHAT THEY WANT ME TO SIGN , THAT IVE BEEN FIGHTING FOR 2 YEARS ON TOP OF 16 MILLION."

In documents obtained by THR, M.I.A. is also said to have told the arbitrator that the "continued pursuit of this proceeding is transparently an exercise by the NFL intended solely to bully and make an example of Respondents for daring to challenge NFL."

Keep it MTV News UK for more on this story…