Evan Mathis sure knows how to keep his Twitter followers interested.

The Philadelphia Eagles offensive lineman, who recently posted a photo of himself urinating on a sign outside the IRS building, recently tweeted a lucrative proposal to his nearly 30,000 followers: get Amanda Bynes to follow him and win $500. As Mathis confirmed to Sports Illustrated's Jimmy Traina, the offer is real.

Sounds simple enough, except for the fact that Bynes, who has been in the news recently thanks to a slew of legal issues, only follows seven accounts. And unfortunately for Mathis, none of those are athletes.

This isn't the first time Mathis has tweeted about Bynes. In fact, the 31-year-old has shown an unusual interest in the former child star.

Bynes has yet to respond to, or follow, Mathis.