So this is what he meant when he said, "Business is boomin."

Pittsburgh Steelers star receiver Antonio Brown has signed a six-figure deal with Facebook, according to Ian Rapoport of NFL Network, citing sources.

Brown got into hot water for recording a locker room video on Facebook Live immediately after the Steelers' victory over the Kansas City Chiefs last Sunday. It appears Brown's marketing deal with Facebook was in place at the time of the incident.

The 28-year-old superstar will play in Sunday's AFC Championship Game against the New England Patriots though he awaits both team and league punishment for his video. It broke the league's rules on the use of social media.

Brown is one of the most criminally underpaid players in the NFL, earning a base salary of $1.275 million this season despite being one of the league's best players. The Steelers did convert $8.9 million into a signing bonus, however, Brown's off-field deals have provided another source of income as he and his team work on a long-term extension.